Polly bought a cracker for $7 and then bought a parrot for $4.
By how much did Polly's account change after her transactions?

The equation that represents the data given (line r and s) is  y = (-19/5)x + 76/5.; y = 5y-8 respectively.

To get the equations of the lines represented by the given tables, we can use the point-slope form of the equation of a line...

y - y₁  = m ( x - x₁)

where

( x₁, y ₁) is a point on the line, and

m is the slope of the line.

For line r, we can use points (4 ,  8) and (9, -11) to find the slope ...

m = ( y₂ - y₁ ) / ( x₂ - x₁ )

=

(-11 - 8) / (9 - 4) = - 19/5

Let's use the point (4, 8) to write the equation of line r  

y - 8 = (-19/ 5) ( x - 4)

Simplifying, ti becomes

y = (-19/5) x + 76/5

For line s, we can use the points (-2, - 18) and ( 1, -3) to find the slope  ..

m = (y₂ - y₁) / (x₂ - x₁) = (-3 - (-18)) / (1 - (-2) ) = 5

Let's use the point (-2, -18) to write the equation of line s

y - (-18) = 5(x - (-2))

Simplifying we have

y = 5x - 8

Therefore, the equation of line s is y = 5x - 8.

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The distance between Earth and Neptune is 4.35 x 10^9 km.

To find the distance between Earth and Neptune, we need to subtract the distance between Earth and the Sun from the distance between Neptune and the Sun.

Distance between Earth and Neptune = Distance between Neptune and the Sun - Distance between Earth and the Sun

Given:

Distance between Earth and the Sun = 1.5 x 10^8 km

Distance between Neptune and the Sun = 4.5 x 10^9 km

Substituting these values into the equation, we have:

Distance between Earth and Neptune = 4.5 x 10^9 km - 1.5 x 10^8 km

To subtract these values, we need to make sure they are in the same units. In this case, both values are already in kilometers, so we can subtract them directly:

Distance between Earth and Neptune = 4.5 x 10^9 km - 1.5 x 10^8 km

= 4.5 x 10^9 km - 0.15 x 10^9 km

= (4.5 - 0.15) x 10^9 km

= 4.35 x 10^9 km

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The volume of a rectangular prism with the width of 9cm, a length of 11cm, and a height of 8 cm is 792 cm³.

Given width of the rectangular prism (W) = 9 cm

The length of the rectangular prism (L) = 11 cm

The height of the rectangular prism (H) = 8 cm

To find out the volume of the rectangular prism we have to multiply the length, width, and height. So, the formula to find the volume of the rectangular prism is L x W x H.

By substituting the given values in the above equation we can obtain the volume of the given rectangular prism.

Volume = L x W x H

             = 11 cm x 9 cm x 8 cm

             = 792 cm³.

From the above explanation, we can conclude that the volume of the given rectangular prism is 792 cm³.

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The proportion is (1/3)/8 = x/6.

The value of the missing measure is 0.25 feet.

The scale factor is the size by which the shape is enlarged or reduced. It is used to increase the size of shapes like circles, triangles, squares, rectangles, etc.

We have:

A smaller parallelogram with side lengths one-third foot and x feet.

A larger parallelogram with side lengths 8 feet and 6 feet.

proportion: (1/3)/8 = x/6

8x = 1/3 * 6

8x = 2

x = 2/8

x = 0.25

The  side of the original parallelogram corresponds to the 6 ft side of the enlarged parallelogram is x feet.

The second step in solving the proportion is cross multiplication.

The value of the missing measure is 0.25 feet.

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keeping in mind that there are 16oz in 1 pound, Check the picture below.

The work required to pump the water out of the spout is approximately 2026 ft-lb.

The work required to pump the water out of the spout depends on the weight of the water and the height of the spout.

The formula for work:

work = force x distance

The force required to lift the water is equal to its weight.

The weight of the water can be found using the density of water, which is 62.5 lb/ft³, and the volume of water in the tank.

Let's assume that the tank has a rectangular base of length L and width W, and a height H.

The volume of water in the tank is equal to the product of the length, width, and height of the tank:

volume = L x W x H

The weight of the water is equal to its volume times its density:

weight = volume x density

weight = L x W x H x 62.5

To pump the water out of the spout, we need to lift it to a height equal to the height of the water level in the tank.

Let's assume that the height of the water level in the tank is h.

The work required to pump the water out of the spout is then:

work = weight x h

work = L x W x H x 62.5 x h

Since we don't have values for L, W, H, and h, we can't calculate the exact work required.

The formula by assuming that the tank is a cube of side length s, and that the height of the water level in the tank is equal to the side length of the cube. In this case, we have:

volume = s³

weight = s³ x 62.5

work = s³ x 62.5 x s

work = 62.5 s⁴

To get the work required in ft-lb, we need to convert the weight from lb to ft-lb.

Since weight is force times gravity, and gravity is approximately 32.2 ft/s², we have:

weight in ft-lb = weight in lb x gravity

weight in ft-lb = s³ x 62.5 x 32.2

The work required in ft-lb by multiplying the weight in ft-lb by the height of the water level in the tank is also equal to the side length of the cube:

work in ft-lb = weight in ft-lb x s

work in ft-lb = s⁴ x 62.5 x 32.2

Plugging in s = 1 (since we don't have any value for the length of the side), we get:

work in ft-lb ≈ 2026

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The amount of fencing needed to enclose the circular pig pin, which refers to its circumference, is approximately 57.8 ft.

The circumference of a circle describes its perimeter or the total distance around the circle.

There are two ways to compute the circumference using the diameter.

The circumference is equal to π × Diameter or 2πR

The diameter of the pin = 18.4 ft

Circumference formula = π × Diameter or 2πR, where π is the pi or 3.14, r is radius of ¹/₂ of diameter.

= 3.14 x 18.4

= 57.8 ft.

Thus, note that the Pi (π) is a special mathematical constant, showing the ratio of circumference to diameter of any circle.

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Answer: 12.4 feet

Step-by-step explanation:

62 divided by 5 is 12.4.

Therefore your answer is 12.4 feet.

Length of each story of this building is,

= 12.4 feet

We have to given that,

A new building is about 62 feet tall.

And, It has 5 stories.

Since, Height of new building is, 62 feet

Hence, Length of each story of this building is,

= 62 / 5

= 12.4 feet

Therefore, Length of each story of this building is,

= 12.4 feet

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The indicated probability P(z ≥ 1.33) is 0.0918 or approximately 0.0919 when rounded to four decimal places.

To find the probability P(z ≥ 1.33) with z being a standard normal distribution, we can use a standard normal table or a calculator that has the capability to find normal probabilities. Using a standard normal table, we look up the area to the right of 1.33 (since we are looking for P(z ≥ 1.33)). The value we find is 0.0918, rounded to four decimal places.

Alternatively, we can use a calculator to find the probability directly. We can use the normalcdf function in a calculator or statistical software, specifying a lower limit of 1.33 and an upper limit of infinity (since we want the probability of z being greater than or equal to 1.33). This gives us a probability of 0.0918, rounded to four decimal places.

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A cheeseburger contains 400 calories and a small order of fries contains 320 calories.

Let's denote the caloric content of a cheeseburger by "c" and the caloric content of a small order of fries by "f".

We can set up a system of equations based on the given information:

2c + f = 1120 (Equation 1)

3c + 2f = 1840 (Equation 2)

To solve for "c" and "f", we can use elimination or substitution. Let's use elimination:

Multiply Equation 1 by 2:

4c + 2f = 2240 (Equation 3)

Subtract Equation 3 from Equation 2:

3c + 2f - (4c + 2f) = 1840 - 2240

-c = -400

c = 400

Now we can substitute this value back into either Equation 1 or Equation 2 to solve for "f". Let's use Equation 1:

2(400) + f = 1120

800 + f = 1120

f = 320

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The value of w is greater than 30 and it means that the number of subscribers Darla needs to make is more than 30

Given that

150 + 10w > 450

So, we have

10w > 450 - 150

Evaluate the difference

10w > 300

So, we have

w > 30

See attachment for the graph

The solutions within the context of the problem means that the number of subscribers Darla needs to make is more than 30

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Resilient responses, often observed in individuals or communities facing adversity, are generally attributed to three key factors: individual characteristics, external support, and learned behaviors. These factors interact and contribute to a person's ability to adapt, recover, and thrive in challenging situations.

Individual characteristics include inherent traits such as optimism, emotional intelligence, and self-efficacy. These personal attributes play a crucial role in shaping how individuals perceive and cope with stressors, ultimately determining their resilience.

External support encompasses the availability and quality of resources provided by a person's social network, including family, friends, and professional support services. Access to reliable and consistent support systems enhances resilience by providing emotional, informational, and tangible assistance during difficult times.

Learned behaviors refer to the strategies and coping mechanisms developed over time through experience and guidance. Acquiring problem-solving skills, developing healthy coping strategies, and cultivating a growth mindset can all contribute to a more resilient response to adversity.

In summary, resilient responses are influenced by a combination of individual characteristics, external support, and learned behaviors. These factors work together to determine a person's ability to adapt and recover from life's challenges. By nurturing these aspects, individuals and communities can cultivate greater resilience and improve their overall well-being.

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(a) The z-score corresponding to x = 25 is -1. (b)The z-score corresponding to x = 42 is 2.4.(c) The raw score corresponding to z = -3 is 15. (d)  The raw score corresponding to z = 1.5 is 37.5.

For a normal distribution with mean μ = 30 and standard deviation σ = 5:

(a) To find the z-score corresponding to x = 25, we use the formula:

z = (x - μ) / σ

Substituting the values, we get:

z = (25 - 30) / 5 = -1

Therefore, the z-score corresponding to x = 25 is -1.

(b) To find the z-score corresponding to x = 42, we again use the formula:

z = (x - μ) / σ

Substituting the values, we get:

z = (42 - 30) / 5 = 2.4

Therefore, the z-score corresponding to x = 42 is 2.4.

(c) To find the raw score (x) corresponding to z = -3, we use the formula:

z = (x - μ) / σ

Rearranging the formula, we get:

x = μ + zσ

Substituting the values, we get:

x = 30 + (-3) x 5 = 15

Therefore, the raw score corresponding to z = -3 is 15.

(d) To find the raw score (x) corresponding to z = 1.5, we use the same formula:

x = μ + zσ

Substituting the values, we get:

x = 30 + 1.5 x 5 = 37.5

Therefore, the raw score corresponding to z = 1.5 is 37.5.

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Answer:D

Step-by-step explanation:

I believe it's D because the 4 dots above 7 are anomalies as they follow a steady pattern.















I might be wrong. Sorry if i am

Note that the estimate of the number of females who are over 50 years of age based on the histogram are 7.

We can work out the frequency from the histogram by doing:

Frequency = Frequency Density  x Group Width

Now lets find the number of people above the age of 50, which is 2 area in the histogram.

Area 1 = 1.4 x 10  = 14

Area 2 = 0.7 x 30 = 21

Add to the total over 50

Total =

14 + 21 = 35

Recall that 20% are female so

20% of 35 = 7

Therefore,  the number of females who are over 50 years of age based on the histogram are 7.

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Answer:

  (c)  Yes, because for each input there is exactly one output.

Step-by-step explanation:

You want to know if the relation {(-5, 1), (-2, 0), (-1, -1), (0, 2), (1, 3), (5, 1)} represents a function.

A relation is a function if there is exactly one output for each input. When the (input, output) points are plotted on a graph, no two of them lie on the same vertical line (the "vertical line test"). When the points are listed in a table, no input value is repeated.

The attachment shows the graph of the given relation. You will notice it passes the vertical line test, and that no x-value is repeated in the table.

Is the relation a function?

  C.  Yes, because for each input there is exactly one output.

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The expression is simplified to x = -7/5

Index forms are simply described as mathematical forms that are used to represent numbers that are two large or small in more convenient forms.

They are also called the scientific notation or standard forms.

From the information given, we have that;

27^2x=3^x-7

Find the cube value of 27 and subsitute the value, we get;

3³⁽²ˣ⁾ = 3ˣ⁻⁷

cancel the common values, we get;

3(2x) = x - 7

expand the bracket

6x = x - 7

collect like terms

5x = -7

x = -7/5

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The value of k after the code completes is 36.

To understand why, let's walk through the code.
First, we declare and initialize three variables i, j, and k to 0.
Then, we enter a while loop that will continue as long as i is less than 3.
Inside the while loop, we increment i by 1 and reset j to 0.
Next, we enter another while loop that will continue as long as j is less than 3.
Inside this while loop, we increment j by 1 and add the sum of i and j to k.

So on the first iteration of the outer while loop (when i is 1), the inner while loop will add 2 + 1 to k. On the second iteration (when i is 2), the inner while loop will add 3 + 2 and 3 + 1 to k. On the third and final iteration (when i is 3), the inner while loop will add 4 + 3, 4 + 2, and 4 + 1 to k.

Thus, the final value of k will be the sum of all these additions:

2 + 1 + 3 + 2 + 3 + 1 + 4 + 3 + 4 + 2 + 4 + 1 = 36

Therefore, the answer is a. 36.

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Answer: To find the mass of the piece of mahogany wood, we need to use the formula:

mass = density x volume

Substituting the given values, we get:

mass = 0.71 g/cm³ x 1728 cm³

mass = 1228.88 g

Therefore, the mass of the piece of mahogany wood is 1228.88 g.

An exponential equation that best models this set of data is [tex]y = 6.003e^{0.1821x}[/tex]

In this scenario, the years would be plotted on the x-axis (x-coordinate) of the scatter plot while the town population would be plotted on the y-axis (y-coordinate) of the scatter plot through the use of Microsoft Excel.

On the Microsoft Excel worksheet, you should right click on any data point on the scatter plot, select format trend line, and then tick the box to display an exponential equation for the line of best fit (trend line) on the scatter plot.

From the scatter plot (see attachment) which models the relationship between the years and town population, an exponential equation for the line of best fit is given by:

[tex]y = 6.003e^{0.1821x}[/tex]

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The importance of the standard normal distribution arises from the fact that any normal random variable can be transformed or standardized into the standard normal random variable to derive the relevant probabilities.

The normal distribution is a continuous probability distribution used to model random variation around the mean of a variable.The importance of the standard normal distribution arises from the fact that any normal random variable can be transformed. It is characterized by two parameters: the mean (μ) and the standard deviation (σ). The standard normal distribution is a special case with a mean of zero and a standard deviation of one, denoted by Z. It has a bell-shaped curve, and the area under the curve between two values represents the probability of observing a value in that interval.

To transform a normal distribution into the standard normal distribution, standardization is employed. This process involves subtracting the mean of the normal distribution from the random variable and dividing the result by the standard deviation. The resulting standardized value has a mean of zero and a standard deviation of one, following the formula: z = (x - μ) / σ.

Once the standard normal distribution is obtained, probabilities can be calculated using the z-table. This table provides the area under the curve of the standard normal distribution to the left of a given value of z. By looking up the relevant value in the z-table, the probability of observing a value less than or equal to that z-value can be determined.

For example, let's consider a normal distribution with a mean of 70 and a standard deviation of 10. To find the probability of observing a value less than 80, we standardize the value as follows: z = (80 - 70) / 10 = 1. We then consult the z-table and find the area under the curve to the left of z = 1, which is 0.8413. Therefore, the probability of observing a value less than or equal to 80 in the original normal distribution is 0.8413.

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The correct statement is: the volume of the cylinder is 8 cubic inches more than that of the cone.

The volume of cone (V) = 1/3 * πr²h

Volume of cylinder (V) = πr²h

Where, r is the radius of their bases.

The base area formula for the cone = πr²

Calculate the area of the base of the cone that has a radius (r) of 2.5 in:

Area of the base of the cone = π(2.5)² ≈ 19.6

The volume of the cone (V) = 1/3 * πr²h = 1/3 * π * 2.5² * 6.5

≈ 42.5 cubic inches

Volume of cylinder (V) = πr²h = π * 2² * 4

≈ 50.3 cubic inches

The difference in volume = 50.3  - 42.5

= 7.8 ≈ 8 cubic inches

Therefore, the only statement that is true is: the volume of the cylinder is 8 cubic inches more than that of the cone.

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The perimeter of Todd’s sandbox is; 20.8 feet.

Applying the similarity of triangles.

Consider 'x' and 'y' be the two unknown sides of triangle.

14/ x = 20/8 = 18/y

14/ x = 20/8

x = 14*8 / 20

x = 5.6

20/8 = 18/y

y = 18*8 / 20

y = 7.2

Perimeter of Todd’s sandbox,

= x + y + 8

= 5.6 + 7.2 + 8

= 20.8

Thus,  the perimeter of Todd’s sandbox is 20.8 feet.

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Answer:

(1, 1/2)

Step-by-step explanation:

To find the midpoint of a line segment with endpoints (x1,y1) and (x2,y2), we can use the midpoint formula which is ((x1+x2)/2, (y1+y2)/2) .

In this case, A has coordinates (3,-2) and B has coordinates (-1,3). Plugging these values into the midpoint formula gives us:

((3 + (-1))/2, (-2 + 3)/2) = (1, 1/2)

Therefore, the midpoint of AB has coordinates (1, 1/2) . I hope that helps!

-2/pi is the average rate of change of y=cos(2x) on the interval [0, pi/2]. The correct answer is option a.

We can find the average rate of change of a function f(x) on an interval [a,b] using the formula:

average rate of change = (f(b) - f(a)) / (b - a)

Using this formula and the given function y = cos(2x) on the interval [0, pi/2], we get:

average rate of change = (cos(2(pi/2)) - cos(2(0))) / (pi/2 - 0)

= (-1 - 1) / (pi/2)

= -2/pi

Therefore, the answer is not one of the given options. The closest option is A.

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Complete Question

What is the average rate of change of y=cos(2x) on the interval [0, pi/2]?

A. -2/pi

B. -1

C. 0

D. Square root of 2/2

E. 4/pi

The value of the possible coordinates of point B is, (- 8, 10)

We have to given that;

The coordinates of point A are (4,1).

And, the x- coordinate of point B is -8.

Since, the distance between point A and B is 15 units.

Let us assume that,

the possible coordinates of point B is,

= (x, y)

= (- 8, y)

The distance between two points (x₁ , y₁) and (x₂, y₂) is,

⇒ d = √ (x₂ - x₁)² + (y₂ - y₁)²

Hence, We get;

the distance between point A and B is,

⇒ d = √ (- 8 - 4)² + (y - 1)²

⇒ 15 = √144 + (y - 1)²

⇒ 225 = 144 + (y - 1)²

⇒ (y - 1)² = 225 - 144

⇒ (y - 1)² = 81

⇒ y - 1 = 9

⇒ y = 10

Thus, The value of the possible coordinates of point B is, (- 8, 10)

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This exponential function captures the exponential decay of the number of players as the tournament progresses.

The exponential function that can be used to find the number of players left in the tournament during each round is:

N(t) = N(0) * (1/2)^t

Where:

N(t) represents the number of players remaining after t rounds of tennis.

N(0) is the initial number of participants at the start of the tournament, which is 128 in this case.

t represents the number of rounds played.

The function (1/2)^t represents the fact that during each round, half of the players are eliminated. Each time a round is played, the remaining number of players is halved.

For example, after 1 round, the number of players remaining is N(1) = 128 * (1/2)^1 = 64. After 2 rounds, N(2) = 128 * (1/2)^2 = 32, and so on.

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The probability of rolling a sum of 7 or 11 when rolling both dice is approximately 0.111 or 11.1%.

The probability of rolling a sum of 7 or 11 with two 6-sided dice, we can first calculate the total number of possible outcomes when rolling both dice.

Each die has six possible outcomes, so the total number of possible outcomes when rolling both dice is 6 x 6 = 36.

To count the number of outcomes where the sum is 7 or 11.

There are two ways to roll a sum of 7:

(1, 6) and (6, 1).

There are also two ways to roll a sum of 11:

(5, 6) and (6, 5).

There are four possible outcomes that result in a sum of 7 or 11.

Thus, the probability of rolling a sum of 7 or 11 is:

4/36

= 1/9

≈ 0.111

The total number of outcomes while rolling both dice in order to determine the likelihood of rolling a sum of 7 or 11 using two 6-sided dice.

Rolling both dice, there are a total of six possible results for each die, for a total of 36 options in all.

to determine how many possibilities there are where the total is 7 or 11. Rolling a 7, there are two possible outcomes: (1, 6) and (6, 1).

Additionally, there are two methods to roll an 11: (5, 6) and (6, 5).

There are four events that can lead to a total of either 7 or 11.

As a result, the likelihood of rolling a 7 or 11 is 4/36 = 1/9 0.111.

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