The method to convert a vector from component form to linear form to trigonometric form is shown below.
Given that;
To convert a vector from component form to linear form to trigonometric form.
Let a linear form of expression is,
⇒ x + iy
Now, We can change it into trigonometric form as;
Plug x = r cos θ, y = r sin θ
And, θ = tan ⁻¹ (y/x)
Hence, We get;
⇒ x + iy
⇒ r cos θ + i r sin θ
⇒ r (cos θ + i sin θ)
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I have 20 goldfish packets with 140 goldfish in them. How many goldfish will i have if i have 295 goldfish packets
If you have 20 goldfish packets with 140 goldfish in each, you have 2800 goldfish in total. If you have 295 goldfish packets, you will have 41,300 goldfish in total.
To calculate the total number of goldfish, we first find the total number of goldfish in 20 packets, which is 20 x 140 = 2800 goldfish. Then, to find the total number of goldfish in 295 packets, we multiply the number of goldfish in one packet (140) by the number of packets (295), giving us 41,300 goldfish in total. It is important to keep track of units when performing calculations, in this case, the units are packets and goldfish. By multiplying the number of packets by the number of goldfish in each packet, we can determine the total number of goldfish.
It is important to note that keeping a large number of goldfish requires a suitable environment and proper care. Goldfish need enough space to swim, clean water, and appropriate nutrition to thrive. It is recommended to research the proper care of goldfish before owning them and to ensure that you can provide a suitable habitat for the number of goldfish you plan to keep.
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assume the callers to a cable company is normally distributed with a mean of 3.4 minutes and a standard deviation of 0.8 minutes. determine the percent of callers who are on hold between 2.9 and 4.4 minutes.
Approximately 68% of callers are on hold between 2.6 and 3.4 minutes. To find the per cent of callers on hold between 2.9 and 4.4 minutes, we need to find the area under the normal distribution curve between these two values.
Using a standard normal distribution table or calculator, we can find the z-scores for 2.9 and 4.4, which are -0.63 and 1.5, respectively. Then, we can use the cumulative distribution function (CDF) to find the area under the curve between these z-scores. The result is approximately 65.6%. Therefore, we can conclude that about 65.6% of callers are on hold between 2.9 and 4.4 minutes.
To explain the calculation in more detail, we can use the formula for the standard normal distribution, which is:
z = (x - μ) / σ
where z is the z-score, x is the value we are interested in, μ is the mean, and σ is the standard deviation. Using the given values, we can find the z-scores for 2.9 and 4.4 as follows:
z1 = (2.9 - 3.4) / 0.8 = -0.63
z2 = (4.4 - 3.4) / 0.8 = 1.25
We need to use the CDF to find the area under the curve between these two z-scores. The CDF gives the probability that a random variable is less than or equal to a certain value. We can use a standard normal distribution table or calculator to find the CDF for each z-score.
The CDF for z1 is approximately 0.2643, and the CDF for z2 is approximately 0.8944. To find the area between these two values, we subtract the smaller CDF from the larger CDF:
0.8944 - 0.2643 = 0.6301
This means that about 63.01% of the area under the normal distribution curve is between z1 and z2. However, we are interested in the per cent of callers who are on hold between 2.9 and 4.4 minutes, not the per cent of the area under the curve. To convert this percentage to the per cent of callers, we can multiply by 100:
0.6301 * 100 = 63.01%
Therefore, approximately 65.6% of callers are on hold for between 2.9 and 4.4 minutes.
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Which rule describes the function in the graph below?
Am not here for any answer am here to tell you to download QANDRA. This app is a maths app it easyly gives answer, and it even have a formula calculator try this app it will really help you thank me later. Thank you for having patience to read it.
Answer is B g(x)=-1/2x+1
the diameter of a cirle is 13 m. circumphrance to the nearest 10
Answer: 40.8
Step-by-step explanation: :)
Like a family tree, a ________ shows the inheritance relationship between classes.
a. flowchart
b. class map
c. class hierarchy
d. binary tree
A class hierarchy is a diagram that shows the inheritance relationship between classes.
It is similar to a family tree in that it shows the parent-child relationships between classes. In a class hierarchy, the parent class is called the superclass and the child class is called the subclass. The subclass inherits the properties and behaviors of the superclass, and can also add new properties and behaviors of its own.
The class hierarchy is an important concept in object-oriented programming, as it allows for code reuse and the creation of complex systems with modular, reusable components.
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Agriculturists in a certain state claim that 43% of the residents in the northern portion of the state prefer flour tortillas over corn tortillas, while 59% of the residents in the southern portion of the state prefer flour tortillas over corn tortillas. Suppose random samples of 33 northerners and 41 southerners are selected. Let p hat Subscript Upper N and P hat Subscript s be the sample proportions of northern and southern residents of this state, respectively, who would prefer flour tortillas over corn tortillas
The sample proportions of northern and southern residents of this state will depend on the actual preferences of the individuals in the samples.
We have a sample of 33 Northerners and 41 Southerners from a certain state. The sample proportions of northern residents (pN) and southern residents (ps) who prefer flour tortillas over corn tortillas can be calculated based on the provided information.
According to the claim by agriculturists, 43% of northern residents and 59% of southern residents prefer flour tortillas. To estimate the proportions in the population, we use the sample proportions.
For the northern residents:
pN = Number of northerners preferring flour tortillas / Total number of northerners in the sample
Assuming that the sample is representative, we can multiply the sample size by the claimed proportion to estimate the number of northerners preferring flour tortillas:
pN = 33 * 0.43 = 14.19 (approximately)
For the southern residents:
ps = Number of southerners preferring flour tortillas / Total number of southerners in the sample
Again, assuming the sample is representative, we can estimate the number of Southerners preferring flour tortillas:
ps = 41 * 0.59 = 24.19 (approximately)
The sample proportions pN and ps are estimates of the proportions in the respective populations. They provide an indication of the preferences of the residents in the northern and southern portions of the state based on the selected samples.
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Which angles are complementary to <1 in the picture?
Answer:B
Step-by-step explanation:
if a = (3.1∠63.2°) and b = (6.6∠26.2°) then solve for the sum (a + b) and the difference (a − b).
To solve for the sum and difference of complex numbers in polar form, we can add or subtract their magnitudes and their angles separately.
Given:
a = 3.1∠63.2°
b = 6.6∠26.2°
To find a + b:
We can use the formula for adding complex numbers in polar form:
(a + b) = (3.1∠63.2°) + (6.6∠26.2°)
= (3.1 cos 63.2° + 6.6 cos 26.2°) + j(3.1 sin 63.2° + 6.6 sin 26.2°)
≈ 6.94∠37.4°
Therefore, a + b = 6.94∠37.4°.
To find a - b:
We can use the formula for subtracting complex numbers in polar form:
(a - b) = (3.1∠63.2°) - (6.6∠26.2°)
= (3.1 cos 63.2° - 6.6 cos 26.2°) + j(3.1 sin 63.2° - 6.6 sin 26.2°)
≈ -3.78∠141.5°
Therefore, a - b = -3.78∠141.5°.
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A die containing the numbers 1 - 6 is rolled. Out of the 15 times the die was rolled, it landed on an even number 8 times. Is this theoretical of experimental probability?
The probability is based on actual observations or data, which makes it an experimental probability. It is important to note that experimental probabilities may not always match theoretical probabilities due to factors such as bias or chance.
The given scenario is an example of experimental probability. Experimental probability refers to the probability of an event based on actual observations or data collected through experimentation or observation. In this case, the experiment involved rolling a die containing the numbers 1-6, and observing the number that appears on the top face of the die. Out of the 15 times the die was rolled, it landed on an even number 8 times. The experimental probability of rolling an even number can be calculated by dividing the number of times an even number was rolled by the total number of rolls, which is 8/15 in this case.
Theoretical probability, on the other hand, refers to the probability of an event based on mathematical calculations and assumptions. For instance, the theoretical probability of rolling an even number on a fair six-sided die can be calculated as 3/6 or 1/2, since there are three even numbers (2, 4, and 6) and six possible outcomes. However, in this case, the probability is based on actual observations or data, which makes it an experimental probability. It is important to note that experimental probabilities may not always match theoretical probabilities due to factors such as bias or chance.
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Help I don't understand.
The profit P(x) = -0.5x² + 23x - 13.
We have,
Q(x) = 45x - 0.5x² and L(x) = 12x + 13
To calculate the profit the formula used
P(x) = Q(x) - L(x)
P(x) = 45x - 0.5x² - (12x+ 13)
P(x) = 45x - 0.5x² -12x - 13
P(x) = -0.5x² + 23x - 13
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Tisha started a petition for lawmakers to change a certain law. As word spreads, more and more people are showing interest. She is gaining about 500 signatures each week. If 2,000 people signed the petition initially, write an equation that will show the number of signatures that can be expected after w weeks. Write your answer in the box below. Instruction: Write your answer without any space(s) and Write it in the form N=a+bw. (Here N = number of signatures that can be expected after w weeks. )
The equation that shows the number of signatures that can be expected after w weeks is N = 2000 + 500w, where N is the number of signatures and w is the number of weeks.
The initial number of signatures is 2,000 and the petition gains 500 signatures each week. Therefore, the equation can be written in slope-intercept form as y = mx + b, where m is the slope (500) and b is the y-intercept (2,000). So, the equation becomes N = 500w + 2000. This means that for each additional week, Tisha can expect to gain 500 more signatures on the petition.
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Work out the length of DG in this cuboid.
Give your answer in centimetres (cm) to 1 d.p.
Answer:
[tex] \sqrt{ {20}^{2} + {44}^{2} } = \sqrt{400 + 1936} = \sqrt{2336} = 4 \sqrt{146} = 48.3[/tex]
The length of DG is about 48.3 cm.
Helpppppppppppppppp
meeeeeeeee
Answer:
Option C
Step-by-step explanation:
well if they are not going to have children that means they will have less financial responsibility in life as that sounds like the most applicable statement
customers arrive at a post office with a single server. fifty percent of the customers buy stamps, and take 2 minutes to do so. twenty percent come to pick up mail and need 3 minutes to do so. the rest take 5 minutes. assuming all these times are deterministic and that the arrivals form a poisson process with a rate of 18 per hour, compute the expected number of customers in the post office in steady state
the expected number of customers in the post office in steady state is 13.16.
We can use the M/M/1 queue model to solve this problem. Since customers arrive at a Poisson rate of 18 per hour, the arrival rate is λ = 18/60 = 0.3 customers per minute. The service times are deterministic, so we can use the mean service time to calculate the service rate. The mean service time is:
(0.5 x 2) + (0.2 x 3) + (0.3 x 5) = 3.1 minutes
So the service rate is μ = 1/3.1 = 0.3226 customers per minute.
The utilization of the system is ρ = λ/μ = 0.3/0.3226 = 0.929. Since the system is stable, the expected number of customers in the system in steady state is:
L = ρ/(1 - ρ) = 0.929/(1 - 0.929) = 13.16 customers
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The center of a circle is at (-5,2) and the radius is 7. what is the equation of the circle
The equation of the circle with center (-5, 2) and radius 7 is ( x + 5 )² + ( y - 2 )² = 49.
What is the equation of the circle?The standard form equation of a circle with center (h, k) and radius r is:
( x - h )² + ( y - k )² = r²
Given that the center of the circle is (-5, 2) and the radius is 7.
Hence, we can substitute these values into the formula to get the equation of the circle:
Plug in h = -5, k = 2 and r = 7
( x - h )² + ( y - k )² = r²
(x - (-5) )² + ( y - 2 )² = 7²
Simplifying and expanding the equation, we get:
( x + 5 )² + ( y - 2 )² = 49
Therefore, the equation of the circle is ( x + 5 )² + ( y - 2 )² = 49.
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WILL GIVE 100 BRAINLY THING PEALESE HELP ASAP!! A student needs to decorate a box as part of a project for her history class. A model of the box is shown.
A rectangular prism with dimensions of 24 inches by 15 inches by 3 inches.
What is the surface area of the box?
Answer:
the surface area of the box is 954 square inches.
Step-by-step explanation:
The surface area of a rectangular prism can be calculated using the formula:
SA = 2lw + 2lh + 2wh
where l, w, and h are the length, width, and height of the rectangular prism.
Substituting the given values, we get:
SA = 2(2415) + 2(243) + 2(15*3)
SA = 720 + 144 + 90
SA = 954 square inches
Answer:
After answering the presented question, we can conclude that Hence surface area 928 ) is the correct answer.
What is surface area ?
The surface area of an object indicates the overall space occupied by its surface. The surface area of a three-dimensional shape is the entire amount of space that surrounds it. The surface area of a three-dimensional shape refers to its full surface area. By adding the areas of each face, the surface area of a cuboid with six rectangular faces may be computed. As an alternative, you can use the following formula to name the box's dimensions: . Surface area is a measurement of the total amount of space occupied by the surface of a three-dimensional form (a three-dimensional shape is a shape that has height, width, and depth).
To get the surface area of a rectangular prism, sum the areas of all six faces.
The surface area of a rectangular prism is calculated as follows:
where l, w, and h denote the rectangular prism's length, breadth, and height.
Substituting the provided values yields:
928 square inches of surface area
As a result, the box's surface area is 928 square inches.
in the eai sampling problem, the population mean is 51800 and the population standard deviation is 4000 . when the sample size is 64 , what is the probability of obtaining a sample mean within 500 of the population mean.
the probability of obtaining a sample mean within 500 of the population mean is approximately 0.6827.
To solve this problem, we need to use the central limit theorem which states that the distribution of the sample means will be approximately normal with mean equal to the population mean and standard deviation equal to the population standard deviation divided by the square root of the sample size.
Given that the population mean is 51800 and the population standard deviation is 4000, we can calculate the standard error of the mean as follows:
Standard error of the mean = 4000 / sqrt(64) = 500
We want to find the probability of obtaining a sample mean within 500 of the population mean. This can be written as:
P(51800 - 500 < X < 51800 + 500)
where X is the sample mean.
We can standardize this interval using the standard error of the mean:
P(-1 < Z < 1)
where Z is a standard normal variable.
Using a standard normal table, we find that the probability of Z being between -1 and 1 is approximately 0.6827.
Therefore, the probability of obtaining a sample mean within 500 of the population mean is approximately 0.6827.
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5. A circle then a heart is chosen 4 out of
50 times from the cards shown. Find the
experimental probability. Then compare the
experimental probability to the theoretical
probability.
The experimental probability is 2/25, while the theoretical probability is 1/6.
The events of choosing a circle then a heart may not be equally likely, or our sample size of 50 is not large enough to give a good estimate of the theoretical probability.
We have,
To find the experimental probability, we need to divide the number of times the circle then the heart is chosen by the total number of choices:
Experimental probability
= number of circle-then-heart choices / total number of choices
We are told that the circle and then the heart is chosen 4 times out of 50,
so:
Experimental probability = 4/50
Simplifying this fraction gives:
Experimental probability = 2/25
To find the theoretical probability, we need to multiply the probability of choosing a circle on the first card by the probability of choosing a heart on the second card.
Assuming the cards are not replaced after each selection and that there are no other cards in the deck besides circles and hearts.
Probability of a circle on the first card = 1/2 (since there are two choices: circle or heart)
Probability of a heart on the second card given that a circle was chosen first = 1/3 (since there are now three choices: two hearts and one circle)
Theoretical probability.
= probability of circle on first card x probability of heart on the second card given circle was chosen first
= (1/2) x (1/3)
= 1/6
Comparing the experimental and theoretical probabilities, we see that they are different.
The experimental probability is 2/25, while the theoretical probability is 1/6.
Thus,
The events of choosing a circle then a heart may not be equally likely, or our sample size of 50 is not large enough to give a good estimate of the theoretical probability.
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The payments of a perpetuity-due are three years apart. The initial payment is 7 and each
subsequent payment is 5 more than its previous payment. Find the price (present value at
time 0) of this perpetuity-due, using an annual effective discount rate of 6%
The price (present value at time 0) of this perpetuity-due, using an annual effective discount rate of 6%, is approximately 6885.70.
Let's first find the present value of the first payment using the formula for the present value of a single cash flow:
PV = FV / (1 + i)^n
where PV is the present value, FV is the future value, i is the discount rate, and n is the number of years.
In this case, the first payment is 7, so its present value is:
PV1 = 7 / (1 + 0.06)^0 = 7
For the subsequent payments, we can use the formula for the present value of a growing perpetuity:
PV = C / (i - g)
where C is the initial payment, i is the discount rate, and g is the growth rate of the payments.
In this case, C is the second payment, which is 5 more than the first payment, so C = 7 + 5 = 12. The growth rate is also 5, since each subsequent payment is 5 more than the previous payment. So we have:
PV2 = 12 / (0.06 - 0.05) = 12 / 0.01 = 1200
For the third payment, we have:
PV3 = 17 / (0.06 - 0.05) = 17 / 0.01 = 1700
And so on.
Since the payments are three years apart, we can add up the present values of each payment for every third year to get the total present value of the perpetuity:
PV = 7 + PV2 + PV3 + PV4 + ... = 7 + 1200 / (1 + 0.06)^3 + 1700 / (1 + 0.06)^6 + ...
This is an infinite geometric series, so we can use the formula for the sum of an infinite geometric series to simplify it:
PV = 7 + 1200 / (1 - (1 + 0.06)^(-3)) = 7 + 1200 / 0.1745 = 6885.70
Therefore, the price (present value at time 0) of this perpetuity-due, using an annual effective discount rate of 6%, is approximately 6885.70.
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need this asap!!!!!!
Answer:
Step-by-step explanation:
First question :
The summation of the angles given in the figure is 360 degrees.So :
3x+4x+5x+6x=360°
⇒ 18x=360°
⇒ x=(360÷18)
⇒ x=20°
Second Question :
Two opposite vertical angles formed when two lines intersect each other are always equal ,So:
5x=3x+58°
⇒ 2x=58°
⇒x=29°
Pls help me to find the slope
The slope is 14/61.
The y-intercept is 2
The equation represents the linear relation is y = (14/61)x + 2.
We have,
From the graph,
The coordinates are:
(0, 2) and (61, 16)
Now,
Slope.
= (16 - 2) / (61 - 0)
= 14 / 61
Now,
The equation of the line.
y = mx + c
And,
m = 14/61
(0, 2) = (x, y)
Substituting.
2 = (14/61) x 0 + c
2 = 0 + c
c = 2
This is the y-intercept.
Now,
The equation represents the linear relation.
y = mx + c
y = (14/61)x + 2
Thus,
The slope is 14/61.
The y-intercept is 2
The equation represents the linear relation is y = (14/61)x + 2.
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A cook whole preparing noodles adds the right ingredients for nine times and makes an error is adding the ingredients for three times what is the probability that the cook adds the right ingredients and cooks well
The probability that the cook adds the right ingredients and cooks the noodles well is 3/4 or 75%.
I understand that you need help calculating the probability of a cook adding the right ingredients while preparing noodles.
To determine the probability, we need to consider the number of successful attempts and the total number of attempts. In this scenario, the cook adds the right ingredients nine times and makes an error three times.
Therefore, there have been 12 attempts in total (9 successful attempts + 3 erroneous attempts).
The probability of adding the right ingredients is calculated by dividing the number of successful attempts (9) by the total number of attempts (12).
So, the probability is:
P(success) = 9 successful attempts / 12 total attempts
By simplifying this fraction, we get:
P(success) = 3/4
Therefore, the probability that the cook adds the right ingredients and cooks the noodles well is 3/4 or 75%. This means that out of every 12 attempts, the cook is likely to add the right ingredients and cook the noodles well nine times.
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Maddy bought 6 pairs of socks for $2.15 a pair. She had a coupon for $1.75 off her total purchase. Which calculation shows the total amount Maddy paid for the socks, not including sales tax?
The total amount paid by Maddy is $14.65.
It is given in the question that Maddy paid $2.15 for each pair of socks. She also had a coupon for $1.75 off the total purchase amount.
So, the total amount paid by Maddy will be the sum of the amount paid for 6 pairs of socks and the coupon amount i.e.
Total amount = $2.15*6 + $1.75
Total amount = $14.65
Hence, the total amount Maddy paid for the socks is $14.65.
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express the point given in cartesian coordinates in cylindrical coordinates (r,θ,z)(r,θ,z).
Finally, we just need to use the z-coordinate of the point as the third coordinate in our cylindrical coordinates. So our final answer is: (r, θ, z) = (sqrt(x2 + y2), arctan(y/x), z)
To express a point given in Cartesian coordinates (x, y, and z) in cylindrical coordinates (r,, and z), we need to use some trigonometry. Here's how it works:
First, we need to find the distance from the origin to the point in question. This distance is given by the formula:
r = sqrt(x2 + y2)
where sqrt() means "square root" and 2 means "squared". So we take the square of the x-coordinate, add it to the square of the y-coordinate, and then take the square root of the result. This gives us the distance from the origin to the point in the x-y plane.
Next, we need to find the angle that the point makes with the positive x-axis. This angle is given by the formula:
= arctan(y/x)
where arctan() means "inverse tangent." This formula gives us the angle in radians (not degrees) between the positive x-axis and the line from the origin to the point. Note that we need to be careful about the signs of x and y when using this formula since arctan() can only give us angles between -pi/2 and pi/2 (i.e., the first and fourth quadrants).
Finally, we just need to use the z-coordinate of the point as the third coordinate in our cylindrical coordinates. So our final answer is: (r, θ, z) = (sqrt(x2 + y2), arctan(y/x), z)
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Therefore, the point (3,4,5) in Cartesian coordinates can be expressed in cylindrical coordinates as (5,0.93,5), where r = 5, θ ≈ 0.93 radians, and z = 5.
Sure, I can definitely help you with that! To express a point given in Cartesian coordinates (x,y,z) in cylindrical coordinates (r,θ,z), we use the following formulas:
r = √(x^2 + y^2)
θ = arctan(y/x)
z = z
So, if we have a point (x,y,z) in Cartesian coordinates, we can convert it to cylindrical coordinates using these formulas. For example, let's say we have the point (3,4,5) in Cartesian coordinates. To express this point in cylindrical coordinates, we first find r, θ, and z using the formulas above:
r = √(3^2 + 4^2) = √25 = 5
θ = arctan(4/3) ≈ 0.93 radians
z = 5
I hope this helps! Let me know if you have any further questions or if you need me to explain anything in more detail.
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find the limit, if it exists. (if an answer does not exist, enter dne.) lim x→[infinity] 49x2 + x − 7x
The limit of the given function as x approaches infinity is infinity.
To find the limit of the given function as x approaches infinity, we need to analyze the behavior of the function for very large values of x.
First, we can observe that the term 49x^2 dominates the other terms in the function as x gets very large. This is because the square of any number grows much faster than a linear function (x) or a constant function (-7x).
Therefore, we can simplify the given function as follows:
lim x→[infinity] (49x^2 + x − 7x) = lim x→[infinity] 49x^2
Now we can directly evaluate the limit by applying the rule that states if a function is of the form ax^n where a and n are constants and x approachesinfinity, then the limit is infinity if n > 0 and negative infinity if n < 0.
In this case, a = 49 and n = 2, which is greater than 0. Therefore, the limit as x approaches infinity is infinity.
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Consider a triangle ABC like the one below. Suppose that a=19, b=45, and c=41. (The figure is not drawn to scale.) solve the triangle. Carry your intermediate computations to at least four decimal places, and round your answers to the nearest tenth. If there is more than one solution, use the button labeled “or”.
Answer:
A ≈ 25.6°, B ≈ 52.3°, C ≈ 68.8° or A
Step-by-step explanation:
To solve the triangle ABC, we can use the Law of Cosines, which relates the lengths of the sides of a triangle to the cosine of the angles opposite those sides. The law states that:
c^2 = a^2 + b^2 - 2ab cos(C)
where c is the length of the side opposite angle C, a is the length of the side opposite angle A, and b is the length of the side opposite angle B.
Using the given values of a, b, and c, we can substitute into the formula and solve for cos(C):
41^2 = 19^2 + 45^2 - 2(19)(45) cos(C)
1681 = 361 + 2025 - 1710 cos(C)
cos(C) = (361 + 2025 - 1681) / (21945)
cos(C) = 0.37103
Now we can use the inverse cosine function to find the measure of angle C:
C = cos^-1(0.37103)
C ≈ 68.8°
Next, we can use the Law of Sines to find the measures of angles A and B:
sin(A)/a = sin(C)/c
sin(A)/19 = sin(68.8°)/41
sin(A) ≈ 0.4250
A ≈ 25.6°
Similarly, we can find the measure of angle B:
sin(B)/b = sin(C)/c
sin(B)/45 = sin(68.8°)/41
sin(B) ≈ 0.7873
B ≈ 52.3°
Therefore, the solution for the triangle ABC is:
A ≈ 25.6°, B ≈ 52.3°, C ≈ 68.8° or A
A cylinder has a base diameter of 4 feet and a height of 15 feet. What is its volume in cubic feet, to the nearest tenths place?
Radius = diameter/2
4/2 = 2 feet
Volume of cylinder = 3.14*height * (radius)²
= 3.14 * 15 * 2 * 2
= 188.4
In the xy-plane, line m passes through the origin and is perpendicular to the line 8x-3y=n, where n is a constant. If the two lines intersect at the point (r, r-2), what is the value of r?
The value of r is 16/11.
To find the value of r, we need to determine the equation of line m and then solve for the coordinates of the intersection point (r, r-2).
We are given that line m passes through the origin and is perpendicular to the line 8x-3y=n.
First, let's determine the slope of the line 8x-3y=n. We can rewrite it in slope-intercept form (y = mx + b) by solving for y:
8x - 3y = n
-3y = -8x + n
y = (8/3)x - (n/3)
The slope of this line is 8/3.
Since line m is perpendicular to this line, the slope of line m will be the negative reciprocal of 8/3. So the slope of line m is -3/8.
Since line m passes through the origin (0, 0), its equation can be written as y = (-3/8)x.
Now, we need to find the intersection point of the two lines (r, r-2).
Substituting the coordinates (r, r-2) into the equation of line m, we get:
r-2 = (-3/8)r
Simplifying the equation, we have:
8(r-2) = -3r
8r - 16 = -3r
11r = 16
r = 16/11
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Find the value of 7 +3² (-5 + 1) divided by 2.
25
-11
32
Why is there no devision symbol T-T
The solution is: the value of x is x = √2+√2+√2+..... = 2.
We have to find the value of x = √2+√2+√2+.....
First take squares on both sides, then,
⇒ x² = 2 + √2+√2+√2+.....
As the terms inside the square roots are non terminating, we can substitute x =√2+√2+√2+..... into the above equation.
i.e., x² = 2 + x
⇒ x² - x -2 = 0
This is a quadratic equation which can be solved using factorization.
⇒ x²+(-2+1)x +(-2.1) = 0
⇒ (x-2)(x+1) = 0
So x = 2 or -1
But here the value of √2 is positive and square root of sum of positive numbers will always be positive.
So we can conclude that
x = √2+√2+√2+..... = 2
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complete question:
Devise a plan to find the value of x .
x= √2 + √2+ √2+.
how much further will the spring stretch if a 0.60 kg block is added to the 1.2 kg block?
The spring will stretch 1.5 times further when the 0.60 kg block is added to the 1.2 kg block.
To determine how much further the spring will stretch when a 0.60 kg block is added to the 1.2 kg block, we need to consider Hooke's Law, which states that the force exerted by a spring is directly proportional to the displacement from its equilibrium position.
Let's assume that the spring is initially stretched by a certain amount x when only the 1.2 kg block is attached. The force exerted by the spring is given by F = kx, where k is the spring constant.
When the 0.60 kg block is added, the total mass becomes 1.2 kg + 0.60 kg = 1.8 kg. The force exerted by the spring remains the same, but the total mass affects the acceleration of the system according to Newton's second law, F = ma.
Using F = ma, we can find the acceleration of the system: F = (1.8 kg)(9.8 m/s^2) = 17.64 N.
Since F = kx, we can rearrange the equation to find x: x = F/k.
Now, if we assume the spring constant k remains constant, the displacement x will increase by a factor of 1.8 kg/1.2 kg = 1.5.
Therefore, the spring will stretch 1.5 times further when the 0.60 kg block is added to the 1.2 kg block.
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