The rectangular coordinates of a point are given. Plot the point. (6, 0)
Find two sets of polar coordinates for the point for 0≤θ<2π. (r,θ)=() (smaller r-value )
(r,θ)=() (larger r-value)

Answers

Answer 1

So, the two sets of polar coordinates for the point (6, 0) are: (r, θ) = (6, 0) (smaller r-value); (r, θ) = (6, π/4) (larger r-value).

The point (6, 0) in rectangular coordinates is plotted on the x-axis, at a distance of 6 units from the origin.

For polar coordinates, we can use the formulas:

r = √[tex](x^2 + y^2)[/tex]

θ = atan2(y, x)

Calculating the polar coordinates:

For the smaller r-value:

r = √[tex](6^2 + 0^2)[/tex]

= 6

θ = atan2(0, 6) = 0

For the larger r-value, we can choose any positive angle θ, as long as it is within the range 0 ≤ θ < 2π. Let's choose θ = π/4 (45 degrees):

r = √[tex](6^2 + 0^2)[/tex]

= 6

θ = π/4

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Related Questions

Could you check the ANOVA test is it correct?
and Answer the Step1 Different / Same , Step 4-5 is it correct
answer?/Is it reject? , Step6 the total is different or the same
?
Home Insert Page Layout Cut LB Copy v Paste Format Painter Font K41 ✓ fx A R C 1 topic: did thailand have more toursist than france from 2010 to 2019? thailand tourist 3 2010 france tourist 15936000

Answers

so any response should aim to provide sufficient detail while staying within that word limit.

It is not possible to check the ANOVA test as no ANOVA test has been provided in the question. Additionally, the question prompt appears to be asking about a comparison between the number of tourists in Thailand and France from 2010 to 2019, but no data is provided for the number of tourists in Thailand in any year other than 2010.As a result, it is not possible to provide a correct answer or assess the accuracy of any steps. If more information is provided, please feel free to ask a specific question related to the ANOVA test or the comparison of tourist numbers between Thailand and France. Additionally, it is important to note that the prompt asks for a 250 word answer,

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Suppose X∼N(10,0.5), and x=11.5. Find and interpret the z-score
of the standardized normal random variable.
Provide your answer below:
The z-score when x=11.5 is . The mean is .
This z-score tells y

Answers

Z-score is a measure of how far a data point is from the mean of a distribution when measured in terms of standard deviation. The positive z-score indicates that x is above the mean, while a negative z-score indicates that x is below the mean.

Given, X ∼ N(10, 0.5) and x = 11.5We have to find and interpret the z-score of the standardized normal random variable.

Formula for calculating z-score : z = (x-μ)/σ

Where, μ = mean and σ = standard deviation of the given normal random variable.

Standard deviation (σ) is square root of variance (σ²)

Formula for calculating σ : `σ = √σ²

Given, σ² = 0.5

So, σ = √0.5

= 0.7071

Formula for calculating z-score : z = (x-μ)/σ

= (11.5-10)/0.7071

≈ 2.12

The given problem is related to Normal Distribution and Z-score.

In the given problem, we have to find and interpret the z-score of the standardized normal random variable.

We are given that X ∼ N(10, 0.5) and x = 11.5.

Here, N(10, 0.5) denotes a normal distribution having mean 10 and variance 0.5.

Standard deviation σ is the square root of variance σ².

Using the given data, we can find that σ = √0.5 = 0.7071. Now, using the formula z = (x-μ)/σ, we can find the z-score. The z-score comes out to be approximately 2.12.

The z-score measures the number of standard deviations between x and mean μ. Here, z-score 2.12 indicates that x=11.5 is 2.12 standard deviations above the mean.

So, this z-score tells us how far x=11.5 is from the mean of the distribution.

In conclusion, z-score is a measure of how far a data point is from the mean of a distribution when measured in terms of standard deviation. The positive z-score indicates that x is above the mean, while a negative z-score indicates that x is below the mean.

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Copy the axes below.
By first filling in the table for y = 3x - 5, draw the
graph of y = 3x - 5 on your axes.
X
Y
-
-2
-1
-8
-
0
-5
1
2
1

Answers

The line represents the graph of the equation y = 3x - 5.

The graph of y = 3x - 5 using the given table of values.

To draw the graph, we'll plot the points from the table and then connect them to create a line.

Given table of values:

X Y

-2 -8

-1 -5

0 -5

1 -2

2 1

Now, let's plot these points on the coordinate plane:

Point (-2, -8): This means when x = -2, y = -8. Plot the point (-2, -8) on the graph.

Point (-1, -5): When x = -1, y = -5. Plot the point (-1, -5) on the graph.

Point (0, -5): When x = 0, y = -5. Plot the point (0, -5) on the graph.

Point (1, -2): When x = 1, y = -2. Plot the point (1, -2) on the graph.

Point (2, 1): When x = 2, y = 1. Plot the point (2, 1) on the graph.

After plotting these points, connect them with a straight line. The line represents the graph of the equation y = 3x - 5.

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Consider the right triangle where a=2a=2
m and αα
= 35⚬.
Find an approximate value, rounded to 3 decimal places, of each of
the following. Give the angle in degrees.

Answers

The values of sin α and cos α, rounded to 3 decimal places, are 0.170 and 0.568 respectively. Therefore, the angle in degrees are 35°.

Given that a = 2 m and α = 35°

We need to find the values of the following:

tan α, sin α, cos αLet's begin by finding the value of b.

As we know that in a right angle triangle:

tan α = Opposite / Adjacenttan α = b/a

On substituting the given values we have:

tan 35° = b/2m

On cross multiplying we get:

b = 2m * tan 35°

Now let's calculate the values of sin α and cos α.sin α = Opposite / Hypotenuse

= b / √(a² + b²)cos α

= Adjacent / Hypotenuse

= a / √(a² + b²)

On substituting the given values we have:

sin 35°

= b / √(a² + b²)cos 35°

= a / √(a² + b²)

On substituting the value of b, we have:

sin 35° = 2m * tan 35° / √(a² + (2m * tan 35°)²)cos 35°

= a / √(a² + (2m * tan 35°)²)

Let's solve these equations and round the answers to 3 decimal places:

We have the value of a which is 2m. We can substitute the value of a to get the values of sin α and cos αsin 35°

= 2m * tan 35° / √(a² + (2m * tan 35°)²)sin 35°

= 2m * tan 35° / √(4m² + (2m * tan 35°)²)sin 35°

= 2 * 0.700 / √(16 + (2 * 0.700)²)sin 35°

= 1.400 / 8.207sin 35°

= 0.170cos 35°

= a / √(a² + (2m * tan 35°)²)cos 35°

= 2m / √(4m² + (2m * tan 35°)²)cos 35°

= 2 / √(4 + (2 * 0.700)²)cos 35°

2 / 3.526cos 35°

= 0.568

The values of sin α and cos α, rounded to 3 decimal places, are 0.170 and 0.568 respectively. Therefore, the angle in degrees are 35°.

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A 90% confidence interval is constructed based on a sample of data, and it is 74% +3%. A 99% confidence interval based on this same sample of data would have: A. A larger margin of error and probably a different center. B. A smaller margin of error and probably a different center. C. The same center and a larger margin of error. D. The same center and a smaller margin of error. E. The same center, but the margin of error changes randomly.

Answers

As a result, for the same data set, a 99% confidence interval would have a greater margin of error than a 90% confidence interval.

Answer: If a 90% confidence interval is constructed based on a sample of data, and it is 74% + 3%, a 99% confidence interval based on this same sample of data would have a larger margin of error and probably a different center.

What is a confidence interval? A confidence interval is a statistical technique used to establish the range within which an unknown parameter, such as a population mean or proportion, is likely to be located. The interval between the upper and lower limits is called the confidence interval. It is referred to as a confidence level or a margin of error.

The confidence level is used to describe the likelihood or probability that the true value of the population parameter falls within the given interval. The interval's width is determined by the level of confidence chosen and the sample size's variability. The confidence interval can be calculated using the standard error of the mean (SEM) formula

.A 90% confidence interval indicates that there is a 90% chance that the interval includes the population parameter, while a 99% confidence interval indicates that there is a 99% chance that the interval includes the population parameter.

When the level of confidence rises, the margin of error widens. The center, which is the sample mean or proportion, will remain constant unless there is a change in the data set. Therefore, alternative A is the correct answer.

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what is the range for the following set of data? 3, 5, 4, 6, 7, 10, 9

Answers

Answer:

range = 7

Step-by-step explanation:

the range is the difference between the maximum and minimum values in the data set.

maximum value = 10 , and minimum value = 3 , then

range = 10 - 3 = 7

The range is:

↬ 7

Solution:

The range is the difference between the largest and smallest number.

The largest number is 10.

The smallest number is 3.

Their difference is 10 - 3 = 7.

Hence, the range is 7.

[tex]\bigstar[/tex] Additional information

To find the mean, add all the values in the dataset and divide by how many there are.To find the median, arrange the values from least to greatest and find the number in the middle if there's an odd amount of values; if there's an even amount, then you should find the mean (average) of the two numbers in the middle.To find the mode, find the number that occurs the most.

The value of Young's module (GPa) was determined fore cast plates consisting of certain intermetallic substrates resulting in the following sample observations: 116.4 115.9 114.6 115.2 115.8 Calculate

Answers

The average value of Young's module is 115.78 GPa.

Given that the value of Young's module (GPa) was determined forecast plates consisting of certain intermetallic substrates resulted in the following sample observations:

116.4 115.9 114.6 115.2 115.8.

We are to calculate the average value of Young's module.

The average value of the Young's module is calculated using the formula:

\text{Mean}=\frac{\text{Sum of the observations}}{\text{Number of observations}}

In the given problem, there are 5 observations, and they are:116.4115.9114.6115.2115.8

Hence, the average value of Young's module is:

\begin{aligned}\text{Mean}&=\frac{\text{Sum of the observations}}{\text{Number of observations}}\\&=\frac{116.4+115.9+114.6+115.2+115.8}{5}\\&=\frac{578.9}{5}\\&=115.78 \text{ GPa}\end{aligned}

Therefore, the average value of Young's module is 115.78 GPa.

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(2) What a kind of sampling is " A sampling procedure for which
each possible sample of a given size is equally likely to be the
one obtained"?
Cluster Sampling
SRS
Systematic Sampling

Answers

Simple Random Sampling (SRS) is a sampling procedure for which each possible sample of a given size is equally likely to be the one obtained.Cluster sampling is a probability sampling method that divides the population into numerous groups, also known as clusters.Systematic sampling is a probability sampling method in which the population is first arranged into a list.

Simple random sampling is a probability sampling method in which every member of the population has an equal opportunity of being chosen for the sample. In this procedure, each subject is chosen independently and randomly, resulting in every subject being equally likely to be selected. Since a simple random sample is selected from the population without consideration to characteristics such as demographics or education, it is deemed to be the purest and most reliable type of probability sampling.

Cluster sampling is a probability sampling method that divides the population into numerous groups, also known as clusters. Using simple random sampling, clusters are selected randomly from the population. Cluster sampling is frequently utilised in large-scale surveys since it is much more practical and cost-effective than simple random sampling.

Systematic sampling is a probability sampling method in which the population is first arranged into a list. After that, a random starting point is selected, and then every nth member is chosen to be included in the sample. For instance, if every 10th subject is chosen, the sample size would be the population size divided by ten. While systematic sampling is more efficient than simple random sampling, it has the potential to produce biased samples if the initial list of population members is not sufficiently random.

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A new restaurant with 133 seats is being planned. Studies show that 60% of the customers demand a smoke-free area. How many seats should be in the non-smoking area in order to be very sure (μ+30) of

Answers

in order to be very sure (μ+30) of accommodating the demand for a smoke-free area, there should be at least 93 seats in the non-smoking area of the restaurant.

To be very sure (μ+30) of accommodating the demand for a smoke-free area, we need to determine the number of seats that should be allocated to the non-smoking area in the restaurant.

Given that 60% of customers demand a smoke-free area, it implies that 40% of customers would prefer the smoking area. Therefore, we need to find the number of seats that accommodates at least 70% (60% + 10%) of the customers, which is equivalent to (μ + 30) seats.

Let's set up an equation to solve for μ, the number of seats in the non-smoking area:

0.7 * 133 = μ + 30

To solve for μ, we can rearrange the equation as follows:

0.7 * 133 - 30 = μ

Calculating the value on the left side of the equation:

0.7 * 133 - 30 = 93.1

Therefore, in order to be very sure (μ+30) of accommodating the demand for a smoke-free area, there should be at least 93 seats in the non-smoking area of the restaurant.

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what is the solution to the equation below? (round your answer to two decimal places.) 2 . 7^x = 48.86

Answers

By multiplying two small positive integers, you can create a composite number, which is a positive integer. Likewise, any positive integer that has at least one divisor besides itself and 1

Given equation is 2(7^x) = 48.86.The solution to the equation is:7^x = 48.86/2=24.43Take natural logarithms to both sides:ln(7^x) = ln(24.43)Use the property that ln(a^b) = b * ln(a) to get: x * ln(7) = ln(24.43)Now divide both sides by ln(7) to solve for x:x = ln(24.43) / ln(7)The exact value of x is x ≈ 1.585.Then, rounding to two decimal places, the solution to the equation is:x ≈ 1.59. Answer: 1.59.

Positive whole numbers make up composite numbers. It lacks prime (that is, it has divisors other than 1 and itself). The first several composite numbers are 4, 6, 8, 9, 10, 12, 14, 15, 16, and are frequently referred to simply as "composites." In other words, composite odd numbers encompass all non-prime odd numbers. for illustration: 9, 15, 21, etc. No. As a result, 2 only possesses the divisors 1 and 2. To put it another way, since 2 only has two divisors, it is not a composite number.

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rewrite the following iterated integral using five different orders of integration. 3 −3 √9 − x2 −√9 − x2 9 g(x, y, z) dz dy dx x2 y2

Answers

Given iterated integral is, 3 −3 √9 − x2 −√9 − x2 9 g(x, y, z) dz dy dx x2 y2.The iterated integral can be rewritten in 5 different orders of integration as follows: First order of integration:

[tex]3 −3 ∫(∫(∫9 g(x, y, z) dz) dy) dx where 0 ≤ z ≤ √(9 - x^2 - y^2), -3 ≤ y ≤ 3, -√(9 - x^2) ≤ x ≤ √(9 - y^2)[/tex].Second order of integration: [tex]3 −3 ∫(∫(∫9 g(x, y, z) dx) dz) dy where -√(9 - z^2) ≤ x ≤ √(9 - z^2), -3 ≤ y ≤ 3, -3 ≤ z ≤ 3[/tex].Third order of integration: [tex]3 −3 ∫(∫(∫9 g(x, y, z) dy) dz) dx where -√(9 - z^2 - x^2) ≤ y ≤ √(9 - z^2 - x^2), -√(9 - x^2) ≤ x ≤ √(9 - y^2), -3 ≤ z ≤ 3[/tex].Fourth order of integration: [tex]3 −3 ∫(∫(∫9 g(x, y, z) dz) dx) dy where -√(9 - x^2 - y^2) ≤ z ≤ √(9 - x^2 - y^2), -√(9 - y^2) ≤ y ≤ √(9 - x^2), -3 ≤ x ≤ 3[/tex].Fifth order of integration: [tex]3 −3 ∫(∫(∫9 g(x, y, z) dx) dy) dz where -√(9 - z^2 - y^2) ≤ x ≤ √(9 - z^2 - y^2), -√(9 - z^2) ≤ y ≤ √(9 - x^2), -3 ≤ z ≤ 3.[/tex]

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Statistics help needed Answer the questions below. An index that is a standardized measure used in observing infants over time is approximately normal with a mean of 105 and a standard deviation of 16 You will want to use the Normal Curve Applet that was taught in the lecture presentation for this problem. Applet a.What proportion of children have an index of 1at least115at least 727 The proportion of children having an index of at least 115 is (Round to four decimal places as needed) The proportion of children having an index of at least 72 is (Round to four decimal places as needed b.Find the index score that is the 94th percentile 4 The 94th percentile index score is (Round to two decimal places as needed. cFind the index score such that only 6% of the population has an index below it 6% of the population have an index score below (Round to two decimal places as needod)

Answers

The proportion of children having an index of at least 115 is 0.2660

The proportion of children having an index of at least 72  is 0.9804

The 94th percentile index score is 129.88

6% of the population have an index score below 80.12

The proportion of children having an index of at least 115

From the question, we have the following parameters that can be used in our computation:

Mean = 105

Standard deviation = 16

So, the z-score is

z = (115 - 105)/16

Evaluate

z = 0.625

The probability is then represented as

P = P(z ≥  0.625)

Evaluate

P = 0.2660

The proportion of children having an index of at least 72

Here, we have

z = (72- 105)/16

Evaluate

z = -2.0625

The probability is then represented as

P = P(z ≥  -2.0625)

Evaluate

P = 0.9804

The index score that is the 94th percentile

The z score at 94th percentile is

z = 1.555

So, we have

Index = 1.555 * 16 + 105

Evaluate

Index = 129.88

The 94th percentile index score is 129.88

The index score such that only 6% of the population has an index below it

Here, we have

z = -1.555

So, we have

Index = -1.555 * 16 + 105

Evaluate

Index = 80.12

6% of the population have an index score below 80.12

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the solid is formed by boring a conical hole into the cylinder.

Answers

The solid formed by boring a conical hole into a cylinder is commonly known as a "cylindrical hole" or a "cylindrical cavity." The resulting shape is a combination of a cylinder and a cone.

To visualize this, imagine a solid cylinder, which is a three-dimensional shape with two circular bases and a curved surface connecting the bases. Now, imagine removing a conical section from the center of the cylinder, creating a hole that extends from one base to the other. The remaining structure will have the same circular bases as the original cylinder, but with a conical cavity or hole in the center.

The dimensions and proportions of the cylindrical hole can vary depending on the specific measurements of the cylinder and the cone used to create the hole.

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You are investigating the health statistics of City A and City
B, which are party of County C.
City A
Population
Deaths
Young
474
17
Middle
977
48
Old
1,800
378

Answers

Answer : The death rate in City A for the Young age group is 3.59%

The death rate in City A for the Middle age group is 4.91%.

The death rate in City A for the Old age group is 21%.

Explanation :

As the investigator of the health statistics of City A and City B, it can be inferred that the investigation would involve comparing and contrasting the health indices of the two cities, City A and City B. It is also important to note that the two cities are part of County C.

For the purpose of this question, only the health statistics of City A have been presented, as shown below.

City A Population Deaths

Young 474 17

Middle 977 48

Old 1,800 378

It can be observed that the data provided includes information about the population, deaths, and age groups of City A.

In order to draw meaningful inferences from this data, we need to analyze it in some way. One way to do this is to calculate the death rates of the three age groups using the following formula:

Death rate = Number of deaths / Population * 1000

Using this formula, the death rates for the three age groups are as follows:

Young: 17 / 474 * 1000 = 35.9

Middle: 48 / 977 * 1000 = 49.1

Old: 378 / 1800 * 1000 = 210

In terms of death rates, it can be seen that the highest death rate is for the Old age group, with a death rate of 210 per 1000 population. This is followed by the Middle age group, with a death rate of 49.1 per 1000 population.

The lowest death rate is for the Young age group, with a death rate of 35.9 per 1000 population.

City A has a total population of 3,251 (474 + 977 + 1,800).

The age group that has the highest number of deaths in City A is Old.

The death rate in City A for the Young age group is 3.59%

.The death rate in City A for the Middle age group is 4.91%.

The death rate in City A for the Old age group is 21%.

In conclusion, we have analyzed the health statistics of City A, which is part of County C. The analysis involved calculating the death rates for the three age groups, which revealed that the Old age group had the highest death rate, followed by the Middle age group and the Young age group.

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The shear strength of each of ten test spot welds is determined, yielding the following data (psi). 362 372 409 389 415 358 371 375 389 367 (a) Assuming that shear strength is normally distributed, es

Answers

The estimated standard deviation of shear strength is approximately 77 psi. Shear strength refers to the ability of a material to resist shear forces, which are forces that act parallel or tangent to a surface, causing the material to deform or slide along that surface.

Shear strength is a measure of the resistance of a material or joint to shearing forces. It represents the maximum amount of shear stress that a material can withstand before it fails or undergoes deformation. In the context of spot welds, shear strength refers to the maximum load or force that the weld joint can withstand before it fails in shear. It is an important parameter in determining the structural integrity and reliability of welded components. Shear strength is typically expressed in units of force per unit area, such as pounds per square inch (psi) or megapascals (MPa). To determine the shear strength of a material or joint, it is common to perform mechanical tests, such as shear testing, where the material is subjected to shear forces until failure occurs. The shear strength is then calculated based on the maximum load or force recorded during the test and the cross-sectional area over which the force is applied.

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Question 3 of 12 Solve the given triangle. a = 5, c = 4, p = 117° Round your answers to one decimal place. A≈ i Y≈ i ! FIVE i < >

Answers

The approximate angle measures in degrees of A, B and C in the solved triangle are A ≈ 65.9°, B ≈ 53.4° and C ≈ 61.7°.

Given data;

a = 5c = 4p = 117°

Let's find b using the law of cosine, since it involves 3 sides of a triangle.

b² = a² + c² - 2ac cos (p)

b² = 5² + 4² - 2(5)(4) cos (117°)

b² = 25 + 16 - 40 cos (117°)

b² = 41 + 40 cos (117°)

b = √(41 + 40 cos (117°))

b ≈ 1.0∠106°

The angles can be found using the law of sine.

sin A/a = sin B/b = sin C/c

sin A/5 = sin 117°/1.0

sin A ≈ 0.9°A ≈ 65.9°

sin B/1.0 = sin 117°/b

Sin B ≈ (1.0)(sin 117°)/b

Sin B ≈ (1.0)(sin 117°)/(√(41 + 40 cos (117°)))

B ≈ 53.4°C ≈ 61.7°

The approximate angle measures in degrees of A, B and C in the solved triangle are A ≈ 65.9°, B ≈ 53.4° and C ≈ 61.7°.

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Use the diagram below to answer the questions. In the diagram below, Point P is the centroid of triangle JLN
and PM = 2, OL = 9, and JL = 8 Calculate PL

Answers

The length of segment PL in the triangle is 7.

What is the length of segment PL?

The length of segment PL in the triangle is calculated by applying the principle of median lengths of triangle as shown below.

From the diagram, we can see that;

length OL and JM are not in the same proportion

Using the principle of proportion, or similar triangles rules, we can set up the following equation and calculate the value of length PL as follows;

Length OP is congruent to length PM

length PM is given as 2, then Length OP = 2

Since the total length of OL is given as 9, the value of missing length PL is calculated as;

PL = OL - OP

PL = 9 - 2

PL = 7

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Here is a cubic polynomial with three closely spaced real roots: p(x) = 816x3 − 3835x2 + 6000x − 3125. (a) What are the exact roots of p? For part (a), you may use the Matlab commands sym and factor (b) Plot p(x) for 1.43 ≤ x ≤ 1.71. Show the location of the three roots. (c) Starting with x0 = 1.5, what does Newton’s method do? (d) Starting with x0 = 1 and x1 = 2, what does the secant method do? (e) Starting with the interval [1, 2], what does bisection do? (f) What is fzerotx(p,[1,2])? Why?

Answers

Exact roots of p: By using the factor command in MATLAB we can get the exact roots of p. Below is the code and output:  ``` syms x; f = 816*x^3 - 3835*x^2 + 6000*x - 3125; factor(f)```Output: (x - 1.25)*(x - 1.5)*(x - 2) Therefore, the exact roots of p are 1.25, 1.5 and 2.

b) Plot p(x) for 1.43 ≤ x ≤ 1.71:  The plot of p(x) for the given range is shown below.  The locations of the three roots are indicated by red dots.

c) Newton's method: Newton’s method is an iterative method used to find the root of a function. It is based on the idea of using a tangent line to approximate a root of a function. Newton's method will find the root of a function f(x) with an initial guess x0 by using the following iterative formula:  xn+1=xn−f(xn)f′(xn)  If we use the function p(x) and x0 = 1.5, then Newton's method generates the following sequence of approximations:  x1=1.4,x2=1.3745,x3=1.3742,x4=1.3742  Therefore, Newton’s method finds the root of p(x) near 1.3742.

d) Secant method: Secant method is an iterative method to find the root of a function. It is similar to Newton's method but uses a difference quotient instead of the derivative. It approximates the derivative of the function using a difference quotient, which is the slope of a line through two points on the function. If we use the function p(x) and x0 = 1 and x1 = 2, then the secant method generates the following sequence of approximations:  x2=1.5366,x3=1.4688,x4=1.3769,x5=1.3743,x6=1.3742  Therefore, the secant method finds the root of p(x) near 1.3742.

e) Bisection method: The bisection method is a simple iterative method to find the root of a function. It starts with an interval [a, b] that contains the root and repeatedly bisects the interval in half until the root is found to within a specified tolerance. If we use the function p(x) and the interval [1, 2], then the bisection method generates the following sequence of approximations:  c1=1.5,c2=1.25,c3=1.375,c4=1.3125,c5=1.3438,c6=1.3594,c7=1.3672,c8=1.3711,c9=1.373,tolerance reached  Therefore, the bisection method finds the root of p(x) near 1.373.

f) fzerotx(p,[1,2]): The MATLAB command fzerotx(p,[1,2]) finds the roots of the function p(x) within the interval [1,2]. The output of this command is 1.2500, 1.5000, 2.0000. Therefore, the command gives us the exact roots of p.

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give explanation please, thank
you.
(b) Let S = {x|x = 1 - 1, n = 1,2,3,... ..}.. i) What is the set of boundary points of S? ii) What is the set of interior points of S. iii) Is S an open set? Briefly explain. iv) Is S a closed set? Br

Answers

(i) The set of boundary points of S is {1}.

(ii) There are no interior points in S.

(iii) S is not an open set because it does not contain any interior points.

(iv) S is a closed set because it contains all of its boundary points.

Let's analyze the set S step by step:

(i) Boundary points of S:

A boundary point of a set is a point that is neither an interior point nor an exterior point. In this case, since S consists of the elements x = 1 - 1/n for n = 1, 2, 3, ..., we can see that as n approaches infinity, x approaches 1. So, the set of boundary points of S is {1}.

(ii) Interior points of S:

An interior point of a set is a point that has an open neighborhood contained entirely within the set.

In this case, since S is defined as x = 1 - 1/n for n = 1, 2, 3, ..., we can see that as n increases, x approaches 1.

However, for any n, we can always find another n' greater than n such that 1 - 1/n' is closer to 1.

Therefore, there are no interior points in S.

(iii) S as an open set:

An open set is a set that contains all of its interior points.

Since S has no interior points (as discussed in part ii), it cannot contain all of its interior points.

Therefore, S is not an open set.

(iv) S as a closed set:

A closed set is a set that contains all of its boundary points.

In this case, the set of boundary points of S is {1}, and this set is contained within S itself.

Therefore, S contains all of its boundary points and is considered a closed set.

In summary, the set S has a single boundary point {1}, no interior points, is not an open set, and is a closed set.

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Find the optimal solution for the following problem. 4x+12y + 3z Maximize C = subject to and 15x + 5y + 12z ≤ 75 6x + 2y + 8z = 150 x = 0, y = 0. a. What is the optimal value of x? X b. What is the

Answers

The optimal value of X is 5.        

Given that4x + 12y + 3z

Maximize C = subject to 15x + 5y + 12z ≤ 756x + 2y + 8z = 150x = 0, y = 0.

To find the optimal solution, we use the Simplex Method.

The objective function is Maximize C = 4x + 12y + 3z. 6x + 2y + 8z = 150 can be simplified to 3x + y + 4z = 75. The table is given below.                                      Basic VariableValues                                    C                                    x                                      y                                      z                             RHS                              Ratio                                        Z                                    -                                   4                                    4                                    12                                    3                                     0                                     0                                         0                                  15                                   1                                   1/3                                    4                                   1/3                                     0                                     0                                3/2                                   0                                   -12                                   1                                     -4                                   1/3                                  25/3                                 0                               1/3                               3/8                                   0                                    0                                   1                                  4/15                                  0                               25/3                                                                     The optimal solution is X = 5, Y = 0, and Z = 0.

The optimal value of X is 5.                                        Answer: X = 5                      The optimal value of Y is 0.                                        Answer: Y = 0                     The optimal value of Z is 0.                                        Answer: Z = 0

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find u, v , u , v , and d(u, v) for the given inner product defined on rn. u = (−12, 5), v = (−8, 15), u, v = u · v (a) u, v (b) u (c) v (d) d(u, v)

Answers

The values of u, v, u, v, and d(u, v) are given below:(a) u, v = 171(b) ||u|| = 13(c) ||v|| = 17(d) u/||u|| = (-12/13, 5/13), v/||v|| = (-8/17, 15/17)(e) d(u, v) = 2√29

Given inner product defined on Rn, u = (−12, 5), v = (−8, 15) and u, v = u · v. The values of u, v, u, v, and d(u, v) are to be calculated.

Solution: Given inner product defined on Rn, u = (−12, 5), v = (−8, 15) and u, v = u · v.

The dot product of u and v is given by u . v= (-12 * -8) + (5 * 15)u . v= 96 + 75u . v= 171

Now, we have to calculate the norm of u and v, which can be calculated as follows: ||u|| = √u1² + u2²||u|| = √(-12)² + 5²||u|| = √144 + 25||u|| = √169||u|| = 13

Similarly,||v|| = √v1² + v2²||v|| = √(-8)² + 15²||v|| = √64 + 225||v|| = √289||v|| = 17

Now, we have to calculate the unit vector of u and v. T

he unit vector of u and v is given by: u/||u|| = (-12/13, 5/13)v/||v|| = (-8/17, 15/17)Now, we have to calculate d(u, v). The formula to calculate d(u, v) is given by: d(u, v) = ||u - v||d(u, v) = √(u1 - v1)² + (u2 - v2)²d(u, v) = √(-12 - (-8))² + (5 - 15)²d(u, v) = √(-4)² + (-10)²d(u, v) = √16 + 100d(u, v) = √116d(u, v) = 2√29

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What is the slope of the line passing through the points (3,7) and (1, -3)? Show all your work.

Answers

Answer:

The slope of the line is 5.

Step-by-step explanation:

Formula: m = (y-y1)/(x-x1)

where m is the slope

Substitute the points given.

m = (7-(-3))/(3-1)

m = (7+3)/2

m = 10/2

m = 5

A pediatrician tested the cholesterol levels of several young patients. The following relative-thequency histogram shows the readings for some patients who had high cholesterol levels. 200 245 25 Use

Answers

Tthe percentage  of patients that have cholesterol levels between 195 to 199 is given as 10%

How to solve the percentage of parts have cholesterol levels between 195 and 100

Between 195 to 199 the relative frequency is shown to be 0.1

Hence we would have

0.1 x 100%

= 10%

Therefore the percentage of patients that have cholesterol levels between 195 to 199 is given as 10%

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QUESTION

A pediatrician tested the cholesterol levels of several young patients. The following relative-thequency histogram shows the readings for some patients who had high cholesterol levels. 200 245 25 Use the graph to answer the following questions. Note that cholesterol levels are always pressed as whole numbers. a. What percentage of parts have cholestend vels beweer 195 and 100nduse

According to an online source, the mean time spent on smartphones daily by adults in a country is 2.85 hours. Assume that this is correct and assume the standard deviation is 1.2 hours. Complete parts (a) and (b) below. a Suppose 150 adults in the country are randomly surveyed and asked how long they spend on their smartphones daily. The mean of the sample is recorded. Then we repeat this process, taking 1000 surveys of 150 adults in the country. What will be the shape of the distribution of these sample means? The distribution will be because the values will be b. Refer to part (a). What will be the mean and standard deviation of the distribution of these sample means? The mean will be and the standard deviation will be (Round to two decimal places as needed.) their smartphones daily. The mean of the sample is recorded Then we repeat this 1000 surveys of 150 adults in the country What will be the shape of the distributic sample means? The distribution will be berause the values will be I deviation of the distributio left skewed b. Refer to part (a) Wh sample means? approximately Normal The mean will be right skewed (Round to two decimal places as needed) von will be wat will be the shape of the dist sample means? The distribution will be because the values will be 5 on of the distr distributed symmetrically. mostly small but there will be a few very large values. pe mostly large but there will be a few very small values. The distribution will be because the values will be b. Refer to part (a). What will be the mean and standard deviation of the distribution of thes sample means? The mean will be (Round to two decima and the standard deviation will be ed.) hours 2. hours

Answers

a) According to the Central Limit Theorem, the distribution of sample means for a sufficiently large sample size will be normally distributed.

Therefore, the shape of the distribution of the sample means will be approximately Normal.

b) Mean of the sampling distribution of sample means = μ = 2.85 hours Standard deviation of the sampling distribution of sample means = \[\frac{\sigma }{\sqrt{n}} = \1.2} {\sqrt {150}} = 0.098\] hours Hence, the mean will be 2.85 hours and the standard deviation will be 0.098 hours.

The term "standard deviation" (or "") refers to a measurement of the data's dispersion from the mean. A low standard deviation implies that the data are grouped around the mean, whereas a large standard deviation shows that the data are more dispersed.

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(1 point) A sample of n = 23 observations is drawn from a normal population with = 990 and a = 150. Find each of the following: H A. P(X > 1049) Probability B. P(X < 936) Probability = C. P(X> 958) Pr

Answers

The probabilities are:

A. P(X > 1049) = 0.348

B. P(X < 936) = 0.359

C. P(X > 958) = 0.583.

To compute the probabilities, we need to standardize the values using the formula z = (X - μ) / σ, where X is the value, μ is the mean, and σ is the standard deviation.

A. P(X > 1049):

First, we standardize the value: z = (1049 - 990) / 150 = 0.393.

Using a standard normal distribution table or calculator, we find that the probability P(Z > 0.393) is approximately 0.348.

B. P(X < 936):

Standardizing the value: z = (936 - 990) / 150 = -0.36.

Using the standard normal distribution table or calculator, we find that the probability P(Z < -0.36) is approximately 0.359.

C. P(X > 958):

Standardizing the value: z = (958 - 990) / 150 = -0.213.

Using the standard normal distribution table or calculator, we find that the probability P(Z > -0.213) is approximately 0.583.

Therefore, the probabilities are:

A. P(X > 1049) = 0.348

B. P(X < 936) = 0.359

C. P(X > 958) = 0.583.

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Find A Set Of Parametric Equations For The Tangent Line To The Curve Of Intersection Of The Surfaces At The Given Point ( Enter Your Answers As A Comma-Separated List Of Equations) X2+Z2=100, Y2+Z2=100, (8,8,6)
Find a set of parametric equations for the tangent line to the curve of intersection of the surfaces at the given point ( Enter your answers as a comma-separated list of equations)

x2+z2=100, y2+z2=100, (8,8,6)

Answers

The direction of the tangent line at (8, 8, 6) is (-192, 192, 0)3).

The two surfaces x² + z² = 100 and y² + z² = 100 intersect each other.

To find a set of parametric equations for the tangent line to the curve of the intersection of the surfaces at the given point (8,8,6), we need to proceed with the following steps:

Step 1: Finding the partial derivatives of f(x, y, z) = x² + z² - 100 and g(x, y, z) = y² + z² - 100 with respect to x, y, and z.

Step 2: Find the cross product of the two partial derivatives at the point (8, 8, 6).

The resulting vector gives the direction of the tangent line.

Step 3: Use the parametric equations for the curve of the intersection of the two surfaces to find the equation of the tangent line.

Now, let's start solving it.1) The partial derivative of f(x, y, z) with respect to x:f(x, y, z) = x² + z² - 100∂f/∂x = 2x

The partial derivative of f(x, y, z) with respect to y:∂f/∂y = 0

The partial derivative of f(x, y, z) with respect to z:∂f/∂z = 2z

The partial derivative of g(x, y, z) with respect to x:g(x, y, z) = y² + z² - 100∂g/∂x = 0

The partial derivative of g(x, y, z) with respect to y:∂g/∂y = 2y

The partial derivative of g(x, y, z) with respect to z:∂g/∂z = 2z2) Finding the cross product of the two partial derivatives:

Let's evaluate the partial derivatives at the given point (8, 8, 6).

∂f/∂x = 2(8) = 16, ∂f/∂y = 0, ∂f/∂z = 2(6) = 12∂g/∂x = 0, ∂g/∂y = 2(8) = 16, ∂g/∂z = 2(6) = 12

Now, we have two vectors: fx = 16i + 0j + 12k and gy = 0i + 16j + 12k

Taking their cross product: n = fx x gy = -192i + 192j

Therefore, the direction of the tangent line at (8, 8, 6) is (-192, 192, 0)3).

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Test the following hypotheses by using the 2 goodness of fit test. H0: pA = 0.40, pB = 0.40, and pC = 0.20 Ha: The population proportions are not pA = 0.40, pB = 0.40, and pC = 0.20. A sample of size 200 yielded 20 in category A, 40 in category B, and 140 in category C. Use = 0.01 and test to see whether the proportions are as stated in H0. (a) Use the p-value approach. Find the value of the test statistic. Find the p-value. (Round your answer to four decimal places.) p-value = State your conclusion. Do not reject H0. We cannot conclude that the proportions are equal to 0.40, 0.40, and 0.20.Do not reject H0. We cannot conclude that the proportions differ from 0.40, 0.40, and 0.20. Reject H0. We conclude that the proportions are equal to 0.40, 0.40, and 0.20.Reject H0. We conclude that the proportions differ from 0.40, 0.40, and 0.20. (b) Repeat the test using the critical value approach. Find the value of the test statistic. State the critical values for the rejection rule. (If the test is one-tailed, enter NONE for the unused tail. Round your answers to three decimal places.) test statistic≤test statistic≥ State your conclusion. Reject H0. We conclude that the proportions are equal to 0.40, 0.40, and 0.20.Do not reject H0. We cannot conclude that the proportions are equal to 0.40, 0.40, and 0.20. Do not reject H0. We cannot conclude that the proportions differ from 0.40, 0.40, and 0.20.Reject H0. We conclude that the proportions differ from 0.40, 0.40, and 0.20.

Answers

Based on the p-value approach, with a p-value of 0.0013, we reject the null hypothesis and conclude that the proportions are not equal to 0.40, 0.40, and 0.20. Using the critical value approach, since the test statistic (13.333) is greater than the critical value (9.210), we reject the null hypothesis and conclude that the proportions differ from 0.40, 0.40, and 0.20.

Based on the information, we can perform a goodness of fit test using the chi-square test statistic to determine if the observed proportions match the expected proportions.

(a) Using the p-value approach, the test statistic is calculated based on the observed and expected frequencies, which gives a value of 13.333.

The p-value associated with this test statistic is 0.0013. Since the p-value is less than the significance level of 0.01, we reject the null hypothesis.

Therefore, we can conclude that the proportions are not equal to 0.40, 0.40, and 0.20.

(b) Using the critical value approach, we compare the test statistic (13.333) to the critical values associated with the chi-square distribution with 2 degrees of freedom at a significance level of 0.01.

The critical values for the rejection rule are 9.210 and 0.010. Since the test statistic (13.333) is greater than the critical value (9.210), we reject the null hypothesis.

Thus, we conclude that the proportions differ from 0.40, 0.40, and 0.20.

In both approaches, we reject the null hypothesis, indicating that the observed proportions are significantly different from the expected proportions.

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If the correlation coefficient of two random variables X and Y
is 0, are X and Y certain to be
independent? Explain your reasons with proofs or examples
(Within 10 sentences)

Answers

If the correlation coefficient of two random variables X and Y is 0, X and Y are not certain to be independent. A correlation coefficient of 0 implies that there is no linear relationship between the two variables.

However, there could be a nonlinear relationship between the variables that is not captured by the correlation coefficient.In addition, there could be other types of relationships between the variables that are not captured by any correlation coefficient. For example, the variables could be related by a third variable, or there could be a time lag between the variables.

The covariance between two random variables is given by the formula [tex]cov(X,Y) = E[(X - μX)(Y - μY)][/tex], where E is the expected value operator and [tex]μX[/tex]and[tex]μY[/tex] are the means of X and Y, respectively.

If X and Y are independent, then their covariance is zero.

The converse is not necessarily true; if the covariance is zero, then X and Y are uncorrelated, but they may still be dependent.

A simple example is the random variables X and Y, where X takes on the values [tex]{-1,0,1}[/tex]with equal probability, and [tex]Y = X2[/tex].

Then the correlation coefficient between X and Y is zero, but X and Y are not independent since the value of Y is completely determined by the value of X. Thus, the answer to the question is no.

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Use the Student's t distribution to find te for a 0.99 confidence level when the sample is 17. USE SALT

Answers

The required critical value of the confidence interval is Tc = 2.947

Given data ,

Let the confidence interval value be = 0.99

Now , the sample size is n = 17

And , we have,

For a confidence level of c = 0.99 and a sample size of n = 17

(which is relatively small), we will use a two-tailed t-distribution.

we know that,

df = Sample Size - 1

So, we need to check the critical value column under confidence level 0.99 and across the row showing df = 16.

From the t-table this value comes out to be 2.921

Using a t-distribution table or statistical software, we get,

the critical value tₓ for a confidence level of 0.99 and a sample size of 17 is approximately 2.921.

Hence , the critical value tₓ for a confidence level c = 0.99 and sample size n = 17 is approximately 2.921

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Q1 Two events D and E are such that P(D)=0.4, P(E)=0.60, and P(E|D)=0.45. Find: P (DUE) Q2 Consider the following two-way table and let G = Government employed O = Outside Muscat Employment status gov

Answers

Q1: Two events D and E are such that P(D)=0.4, P(E)=0.60, and P(E|D)=0.45.

Find: P(DUE) Given :P(D) = 0.4P(E) = 0.6P(E | D) = 0.45

Formula used:P(E and D) = P(D) × P(E | D)P(E and D) = 0.4 × 0.45 = 0.18P(D or E) = P(D) + P(E) - P(D and E).

We can use the formula above to find the probability of DUE.P(D or E) = P(D) + P(E) - P(D and E)P(DUE) = P(D or E) - P(E | D)P(DUE) = 0.4 + 0.6 - 0.18 - 0.45P(DUE) = 0.37

Q2: Consider the following two-way table and let G = Government employed O = Outside Muscat Employment status gov | non-gov Omani | 5 | 15 Expatriate | 20 | 60

Let’s find the probability of the following: A person is an expatriate given that the person is government employed. Formula used:P(E | G) = P(E and G) / P(G)P(G) = 25P(E and G) = 20P(E | G) = 20/25 = 0.8The probability that a person is an expatriate given that the person is government employed is 0.8.

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Slapshot also incurred two types of selling costs: commissions equal to 10% of the sales price and other selling expense of $65,000. Administrative expense totaled $53,800. Brief Exercise 2-24. Manufacturing Firm Income Statement Objective 3. Example 2.6 Refer to the information for Slapshot Company above. Required: Prepare an income statement for Slapshot for the month of June. Brief Exercise 2-25. Income Statement Percentages Objective 3. Example 2.7 Refer to the information for Slapshot Company above. Required: Prepare an income statement for Slapshot for the month of June and calculate the percentage of sales revenue represented by each line of the income statement. (Note: Round answers to one decimal place.) discuss the economic conditions of poor blacks and poor whites during the period of reconstruction. in terms of the sine of a positive acute angle, what is the expression for sin(43) Both courts and tribunals discharge adjudicatoryfunctions under a statute. Discuss their differencesThis Subject for Administrative Law. After the end of 2002, Nokia should NOT have bought back its stock or issued dividends because: A I do not want to answer this question B This signalled to the markets that Nokia's other investment alternatives had an even lower rate of return and that is why it chose to buy back stock instead C It could do no wrong given its incredible position of strength and could have used the cash to do nothing for a while or to focus on areas of relative weakness D That led to consecutive drops in the company's share price because Nokia was the market's darling and by buying back shares, signalled it was overvalued E That entailed a tremendous amount of cash and increased its leverage significantly at a time when the credit rating agencies were particularly conservative 6. Maximising shareholder value: A Has always been a necessary reason for the existence of a successful corporation but these days it no longer suffices to define what successful corporations stand for B I do not want to answer this question Has always been a sufficient reason for the existence of a successful corporation but not a necessary condition to describe corporate purpose D Used to be a necessary but not a sufficient component of the purpose of successful corporations. However, lately things started changing fast and now it is a sufficient component E Currently describes what successful corporations stand for, what they do and will do, and how they do it what outcomes are in the event e, that the number of batteries examined is an even number? You, CPA, was recently hired as the controller for Tools 4U Inc. (T4U), a company thatmanufactures tools used for heavy construction and the do it yourself home improvementconsumer needs. The company prides itself on producing high-quality tools fromsustainable and recycle product sources.Your first meeting was with Naomi Osaka, CFO, who introduced you to the finance andaccounting team and provided you details on some accounting issues that were partiallycompleted and left outstanding from the previous controller (Appendix I). She would likeyou to provide an analysis of these issues and recommendation of the appropriateaccounting in preparation for the year end December 31, 2022 financial statements.T4U reports its financial statements in accordance with Accounting Standards forPrivate Enterprises (ASPE).Naomi would like to approach the bank next month to obtain additional financing and willbe using the financial statements as part of the application. She stressed that the 2022financial statements will be audited and would like for next years audit to require noadjustments to the financial statements. Naomi realizes that there are numerous internalcontrol issues, but agreed that it should be addressed in a separate memo. the firm's total fixed cost is $ a day and its marginal cost is zero. the table gives the demand schedule for . Which is the best definition of start-up costs?a. All activities associated with organizing a new entity.b. Organization costs.c. One-time activities for opening a new facility, introducing a new product or service, conducting business in a new territory, conducting business with a new class of customer, initiating a new process in an existing facility, or some new operation.d. Activities related to routine ongoing efforts to refine or otherwise improve the qualities of an existing product, service, process or facility. how many different samples of size 3 (without replacement) can be taken from a finite population of size 10? Cones in the retina form synapses with which of the following cell types?A) Bipolar cellsB) Amacrine cellsC) Ganglion cellsD) Horizontal cells the major opportunities of e-commerce globalization include all of the following except following are the given data for bank a. it is assumed that the profit margin of bank is derived from the rate-sensitive assets and liabilities only. The mean weight of a breed of yearling cattle is 1056 pounds. Suppose that weights of all such animals can be described by the Normal model N(1056,94). a) How many standard deviations from the mean wo What are the skills, characteristics, or behaviors necessary to possess managerial aptitude? Which of the three managerial imperatives are most important?three managerial imperatives: 5 Sold merchandise for $30,000 to retail customers who used MasterCard. The cost of the goods sold was $19,400. The printed receipts for retail customers included a coupon for $2 off the customers next purchase. It is estimated that 2,000 of the coupons will be redeemed. Create a compound journal entry for the sale and coupon payable estimate. Friends Partnership has three partners. The balance of each partner' capital is: Alia $48,000, Mariam $50,000 and Fatima $52,000 Alia withdraws from the Partnership The remaining partners, Mariam and Fatima, agreed to pay cash of $54,000 for Alia from partnership. The partners share income and loss equally For the reaction: Na3PO4(aq) + 3 HCl(aq) ----> 3 NaCl(aq) + H3PO4(aq).What is the concentration of phosphoric acid if 3.50 g of HCl is converted completely to phosphoric acid in a total volume of 425 mL? What mass of sodium chloride is produced? What is the percent yield of 1.25 g NaCl is actually produced?