In regression analysis, the variable that is being predicted is the.

The probabilities of the given events for all four children are girls is 0.0625, two girls and two boys is 0.375, the youngest child is a girl is 0.5 and the oldest child is a boy is 0.5

What is probability?

Probability is a measure of the likelihood or chance of an event occurring. It is a number between 0 and 1, where 0 represents an impossible event and 1 represents a certain event.

Since the probability of giving birth to a boy or a girl is 0.5, we can use the binomial probability formula to calculate the probabilities of the given events:

1) Probability of all four children being girls:

The probability of having a girl for each birth is 0.5, so the probability of having all four children as girls is (0.5)⁴ = 0.0625 or 6.25%.

2) Probability of having two girls and two boys:

The number of ways to have two girls and two boys in a family of four children is the number of combinations of 4 children taken 2 at a time, which is 6. The probability of having two girls and two boys in any of these combinations is (0.5)⁴ = 0.0625 or 6.25%. Therefore, the probability of having two girls and two boys is 6 * 0.0625 = 0.375 or 37.5%.

3) Probability of the youngest child being a girl:

The probability of having a girl for any birth is 0.5, so the probability of the youngest child being a girl is 0.5.

4) Probability of the oldest child being a boy:

Since there are 2 possibilities for the gender of the oldest child (boy or girl), the probability of the oldest child being a boy is 0.5.

Therefore, the probabilities of the given events are:

All four children are girls: 0.0625 or 6.25%

Two girls and two boys: 0.375 or 37.5%

The youngest child is a girl: 0.5 or 50%

The oldest child is a boy: 0.5 or 50%

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We can draw from this study that we can make inferences based on the results of this study for the population of all tennis balls slated for use in the match.

Based on the information provided, the tennis court official conducts an experiment where a random sample of 50 tennis balls is selected and subjected to different treatments to inspect wear and tear. From this study, we can draw the following conclusion:

A: We can make inferences based on the results of this study for the population of all tennis balls slated for use in the match.

This is because the tennis court official selected a random sample of tennis balls and subjected them to different conditions, allowing us to make inferences about how the entire population of tennis balls might be affected under similar conditions.

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For a sample of 50 customers of last year's customers, the expected number of customers requiring a recall is equals to the 7.5 customers.

The expected value or say mean of a binomial distribution is determined by multiplying the number of trials (n) by the probability of successes (p), that is E(x) = n × p. We have a LaRusso Auto Group of vehicles. Total sales of cars in last year

= 5,000

Number of defective cars in sold cars

= 750

For a random sample of last year's customers, sample size, n= 50

We have to determine the expected number of customers requiring a recall.

Now, the probability of defective cars and customers make a factory recall for dealer correction, p = [tex]\frac{750}{5000} [/tex] = 0.15

So, the sales of cars in Store follows the binomial distribution with parameters n, p. Using expected value or number formula, E(x) = n×p

= 50 × 0.15 = 7.5

Hence, required value is 7.5 customers.

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Answer:

Interval Frequency

0 - 1 5

2 - 3 0

4 - 5 4

6 - 7 8

8 - 9 6

The largest country in Europe by population is Russia. With a population of over 144 million people, Russia holds almost twice as many inhabitants as the second-largest country in Europe, Germany.

The reason why Russia has the largest population in Europe is mainly due to its vast geographical area, which includes diverse ethnic groups and natural resources, thus supporting a larger population. Additionally, historical factors such as migration, urbanization, and economic growth have also contributed to Russia's high population numbers.

One of the main reasons for Russia's large population is its size. As the largest country in the world, Russia covers almost 1/8th of the world's landmass, providing ample room for its citizens to reside. Additionally, Russia's population growth has been influenced by various factors throughout history, including immigration, wars, and government policies. Despite declining birth rates in recent years, Russia's population remains the largest in Europe.

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If f is defined recursively by f(0) = −1, f(1) = 2, and f(n + 1) = f(n) + 3f(n − 1) for n = 1,2,3,4,5 then f(2)=-1, f(3)=5, f(4)=2, f(5)=17

f(0) = -1

f(1) = 2

need to find  f(2), f(3), f(4), and f(5)

f(2) =f(1+1)

we have  f(n + 1) = f(n) +  3f(n − 1)

therefore f(2)= f(1) + 3 * f(0)

but we have f(1)= 2  and f(0)=1 (given)

therefore required f(2)=2+ 3 * (-1)

                                = 2-3    

                            f(2)=-1   ----> equation (1)

need to find  f(3)

f(3)=f((2+1)

here n=2

by def we have  f(n + 1) = f(n) +  3f(n − 1)

f(3)=f(2)+3f(2-1)

   =f(2)+3f(1)

but f(2)=-1 from the above calculated and f(1)=2 given

therefore f(3)=-1+3(2)

                =-1+6

         f(3)  =5        ------------------------>(2)

need to find f(4)

f(4)=f(3+1)

there n=3

therefore by def

f(4)=f(3)+3f(3-1)

     =f(3) +3f(2)

substituing the values of f(3) from  equation (2) and f(2) from  equation 1

f(4)=5+3(-1)

       =5-3

    f(4)   =2-------------------------------------------(3)

need to find f(5)

f(5)=f(4+1)

by def

f(n + 1) = f(n) +  3f(n − 1)

therefore f(5)=f(4)+3f(4-1)

                 =f(4)+3f(3)

Substitute the values from equations (3) and (2) we get

    f(5)=2+3(5)

           =2+15

         f(5)  =17

Therefore, If f is defined recursively by f(0) = −1, f(1) = 2, and f(n + 1) = f(n) + 3f(n − 1) for n = 1,2,3,4,5 then f(2)=-1, f(3)=5, f(4)=2, f(5)=17

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Full question:

Find f(2), f(3), f(4), and f(5) if f is defined recursively by f(0) = −1, f(1) = 2, and f(n + 1) = f(n) + 3f(n − 1) for n = 1,2,3,4,5

The correlation coefficient is approx 0.57, with a positive direction; the slope is 0.41.it seems that the correlation coefficient is approximately 0.57, with a slope of 0.41, indicating a moderately strong positive linear relationship.

To analyze the relationship between age and bone density loss, follow these steps:

1. Open the Excel file containing the data.
2. Create a scatter plot by selecting the data for age (x variable) and bone density loss (y variable).
3. Insert a scatter plot chart from the "Insert" tab in Excel.
4. Add a trendline to the scatter plot by right-clicking on any data point, selecting "Add Trendline," and choosing "Linear."
5. Display the equation and R-squared value on the chart by checking the "Display Equation on chart" and "Display R-squared value on chart" options in the trendline settings.

Based on the information provided in the options, it seems that the correlation coefficient is approximately 0.57, with a slope of 0.41, indicating a moderately strong positive linear relationship. This corresponds to option A:

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NASA would need a sample size of at least 1499 people.

To determine the sample size required for estimating the fraction of people who black out at g forces greater than 6, we can use the following formula:

[tex]n=\frac{Z^2\times p\times (1-p)}{E^2}[/tex]

n = sample size

Z = z-score

p = estimated population proportion from the earlier study (p = 0.46)

(1 - p) = proportion of the population that does not black out at g forces greater than 6

E = desired margin of error (E = 0.03)

n = ((2.33)² × 0.46 × (1-0.46))/(0.03)²

n = 1498.3764

Rounding up to the next integer, we get a required sample size of n = 1499.

Therefore, NASA would need a sample size of at least 1499 people to estimate the fraction of people who black out at g forces greater than 6, with a 98% confidence level and a margin of error of at most 0.03.

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We can match the tape diagrams to the descriptive texts as follows:

1. Kevin spends $13 at a fair. He bought 3 tickets to go on rides and he paid a $4 fee to enter the fair.

2. Knox has 13 cups of soda. He pours equal amounts for four friends and has 3 cups left for himself.

3. Nancy spends 4 hours training for a triathlon. She spends three hours swimming and then bikes 13 miles at a constant pace.

To match the diagrams to the text, we can first begin by checking the figures described and equating them to the corresponding boxes. For instance, in the first diagram, there are 3 boxes with the x sign which indicate the three tickets that Kevin purchased.

The extra $4 entrance fee is indicated by the 4 in the last box. So, this method is how one can match the diagrams to their descriptions effectively.

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The value of the sample proportion of people from Vermont who exercised for at least 30 minutes a day 3 days a week is 0.653, which is equivalent to 65.3%.

It is important to note that this value is based on a random sample of respondents and may not necessarily represent the true proportion of the entire population of Vermont who exercise regularly.

To find the sample proportion of people from Vermont who exercised for at least 30 minutes a day, 3 days a week, follow these steps:

1. Convert the given percentage (65.3%) to a decimal by dividing by 100: 65.3 / 100 = 0.653
2. Multiply the decimal by the number of participants in the random sample (100 respondents): 0.653 * 100 = 65.3
3. Round the result to the nearest whole number to find the number of participants who exercised: 65.3 ≈ 65
4. Divide the number of participants who exercised (65) by the total number of participants in the random sample (100): 65 / 100 = 0.65

This means that out of the 100 participants sampled from Vermont, 65.3 of them answered "yes" to the question of whether they had exercised for more than 30 minutes a day for three days out of the week.

The value of the sample proportion of people from Vermont who exercised for at least 30 minutes a day, 3 days a week is 0.65 or 65%.

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The derivative of F(x) is [tex]F'(x) = 6 - 12(3x+1)^{(1/3)[/tex].

A relation between a collection of inputs and outputs is known as a function. A function is, to put it simply, a relationship between inputs in which each input is connected to precisely one output.

To find the derivative of the given function F(x), we will apply the fundamental theorem of calculus and differentiate the integral with respect to x.

Let's compute F'(x):

F(x) = ∫[2 to 3x] [tex](2 - 4(t+1)^{(1/3))} dt[/tex]

To differentiate the integral with respect to x, we'll use the Leibniz integral rule:

F'(x) = d/dx ∫[2 to 3x] [tex](2 - 4(t+1)^{(1/3))} dt[/tex]

According to the Leibniz integral rule, we have to apply the chain rule to the upper limit of the integral.

[tex]F'(x) = (2 - 4(3x+1)^{(1/3)}) d(3x)/dx - (2 - 4(2+1)^{(1/3)}) d(2)/dx[/tex]   [applying the chain rule to the upper limit]

[tex]F'(x) = (2 - 4(3x+1)^{(1/3)}) (3) - (2 - 4(2+1)^{(1/3)})[/tex] (0)  [using the power rule for differentiation]

[tex]F'(x) = 6 - 12(3x+1)^{(1/3)[/tex]

Therefore, the derivative of F(x) is [tex]F'(x) = 6 - 12(3x+1)^{(1/3)[/tex].

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Answer:

2) Negative one-third

Step-by-step explanation:

In questions such as these, always best to draw the number line for easier visualization

Attached is the number line representing the situation described

The number line goes from -1 to 1 with 0 in the middle of (-1, 1) segment

Since there are 3 equal spaces between the numbers each "space" or the smallest segment is 1/3 units long. In other words each mark is separated from the next mark by a distance of 1/3

The point A is 1 mark to the left of 0 ; this places point A at the - 1/3 mark

Therefore the correct answer is

2) Negative one-third

The approximate area of the trapezoid is determined as  13.95 unit².

The approximate area of the trapezoid is calculated as follows;

Area = ¹/₂(b₁ + b₂)h

Where;

The y-coordinates of the points on the curve at x=3/2 and x=4 is calculated as follows;

y(3/2) = - (3/2)²/2 + 3/2 + 5

y(3/2) = -9/8 + 3/2 + 5

y(3/2) = 5.375

y(4) = -4²/2 + 4 + 5

y(4) = -8 + 9

y(4) = 1

h = 5.375 - 1 = 4.375

The approximate area of the trapezoid is calculated as;

Area = ¹/₂(5.375 + 1) x 4.375

Area = 13.95 unit²

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Let's call the length of the rectangle "L" and the width "W". We know that the width is 10 cm shorter than the length, so we can write.

W = L - 10
We also know that the area of the rectangle is 200 cm 2, so we can write:
A = L x W
Substituting W = L - 10, we get:
A = L x (L - 10)
Expanding the brackets, we get:
A = L^2 - 10L
Now we can substitute in A = 200 and solve for L:
200 = L^2 - 10L
0 = L^2 - 10L - 200
We can use the quadratic formula to solve for L:
L = (-b ± sqrt(b^2 - 4ac)) / 2a
Where a = 1, b = -10, and c = -200. Plugging in these values, we get:
L = (10 ± sqrt(10^2 - 4(1)(-200))) / 2(1)
L = (10 ± sqrt(1100)) / 2
L = (10 ± 10sqrt(11)) / 2
L ≈ 19.9 or L ≈ -9.9
We can disregard the negative solution since we're dealing with lengths, so the length of the rectangle is approximately 19.9 cm.
Now we can use W = L - 10 to find the width:
W = 19.9 - 10
W ≈ 9.9 cm
Therefore, the length of the rectangle is approximately 19.9 cm and the width is approximately 9.9 cm.

To find the length and width of a rectangle whose width is 10 cm shorter than its length and whose area is 200 cm², follow these steps:
1. Define the variables: Let the length of the rectangle be L cm, and the width be W cm.
2. Use the given information: Since the width is 10 cm shorter than the length, we can write the equation W = L - 10.
3. Use the formula for the area of a rectangle: The area of a rectangle is given by the formula A = L × W.
4. Substitute the given area and the equation from step 2: In this problem, the area is 200 cm², so we have 200 = L × (L - 10).
5. Solve the equation for L: Expand the equation to get 200 = L² - 10L. Rearrange the equation to L² - 10L - 200 = 0.
6. Factor the quadratic equation or use the quadratic formula: (L - 20)(L + 10) = 0. This gives two possible values for L: L = 20 cm or L = -10 cm.
7. Discard the negative value: Since the length of a rectangle cannot be negative, we discard the value L = -10 cm. So, the length L is 20 cm.
8. Find the width using the equation from step 2: W = L - 10 = 20 - 10 = 10 cm.
Thus, the length and width of the rectangle are 20 cm and 10 cm, respectively.

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The area of sector AOB with radius of the circle 4cm and angle 60° is equal to 8.4 square centimeters ( approximately ).

Radius of the circle = 4cm

Angle = 60degrees

The area of a sector can be calculated using the formula,

A = (θ/360)πr²

where θ is the central angle of the sector in degrees,

r is the radius of the circle,

and π is the constant pi approximately equal to 3.14.

Substitute the given values, we get,

⇒ A = (60/360)π(4 cm)²

⇒ A = (1/6)π(16 cm²)

⇒ A ≈ 8.3733 cm²

⇒ A ≈ 8.4 cm²

Rounding to the nearest tenth, we get,

A ≈ 8.4 cm²

Therefore, the area of sector AOB is approximately 8.4 square centimeters.

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The above question is incomplete, the complete question is:

If radius r = 4cm,  and  angle = 60degrees find the area of sector AOB to the nearest tenth.

O 18. 8 cm²

O 31. 4 cm²

O 15. 7 cm²

O 8. 4 cm²

[tex] \frac{ \sqrt{2} }{6} [/tex]

~

0.23

The critical value z* for a 98% confidence level is 2.33.

A critical value is a value used as a cut-off to indicate the beginning of a zone where the test statistic from a hypothesis test is unlikely to fall.

To find the critical value z* for a 98% confidence level, we need to find the z-value that corresponds to an area of 0.98 in the standard normal distribution.

Using a standard normal table or a calculator, we can find the z-value that corresponds to an area of 0.98:

z* = 2.33

Therefore, the critical value z* for a 98% confidence level is 2.33.

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The variation of the predicted population mean from the sample mean as per the given data is equal to for sample 1 =6, for sample 2 = 13, for sample 3 = 1.

For sample 1, 2, 3,

Predicted mean are 34 , 15 , and 29.

Actual mean are 28, 28, 28

To compute the variation of each predicted population mean from the sample means.

Required to calculate the difference between the predicted mean and the actual mean for each sample.

And then take the absolute value of each difference.

The formula for this is written as,

|Predicted Mean - Actual Mean|

Using the values from the table, we get,

For Sample 1,

|34 - 28| = 6

For Sample 2,

|15 - 28| = 13

For Sample 3,

|29 - 28| = 1

Therefore, the variation of the predicted population mean from the sample mean is 6 for Sample 1, 13 for Sample 2, and 1 for Sample 3.

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Answer: Sample 1: 6   Sample 2: -13  Sample 3: 1

Step-by-step explanation:

Answer:

<1 = 120

<2 = 32

Sorry for bad handwriting

Answer: 36 feet

Step-by-step explanation: I hope this helps

Koda who is making birdhouses for a park needs 16 trapezoids for 8 birdhouses, 12 rectangles for 3 birdhouses, and 8 triangles when she has 4 squares,

Koda is making birdhouses for a park. For one birdhouse she required 2 trapezoids, 1 square 2 triangles and 4 rectangles.

For the 8 birdhouses, the number of trapezoids she need is,

Trapezoids=2 x 8

Trapezoids=16

For the 3 birdhouses, the number of rectangle she need is,

Rectangle =4 x 3

Rectangle=12

The number of birdhouses when she uses 4 square,

Bird house=4 x 1

Bird house=4

Thus, the number of triangles for 4 birdhouses is,

Triangle=2 x 4

Triangle=8

Hence, Koda who is making birdhouses for a park needs 16 trapezoids for 8 birdhouses, 12 rectangles for 3 birdhouses, and 8 triangles when she has 4 squares,

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The statements that are true of medians in even and odd distributions are:

An even quantity of data values will forever maintain a pair of central numbers. In these circumstances, the middle numbers are attained by calculating the average among the two numbers amidst the set of data. As an illustration, in the series {1, 2, 3, 4}, the dual numeral at the core are 2 and 3.

The mean value between these integers is (2+3)/2=2.5, ultimately making it the center number of this cluster of data. Conversely, an odd number of data inserts shall eternally acquire only one midpoint, simply the figure located within the dataset's nucleus.

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To calculate the effective annual cost of not taking the discount and paying on day 40, we need to determine the cost of financing the purchase over 40 days.

First, we can calculate the cost of not taking the discount:

Discount = 3%

Days to Pay = 40

Effective Interest Rate = (Discount % / (100% - Discount %)) x (365 / (Days to Pay - Discount Period))

Effective Interest Rate = (3% / (100% - 3%)) x (365 / (40 - 20))

Effective Interest Rate = 0.03109 or 3.109%

This means that if Wyatt Oil does not take the discount and pays on day 40, they will effectively be paying an annual interest rate of 3.109% to finance the purchase.

Therefore, the closest answer to the effective annual cost is 3.109%, which is option B: 18%.

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The union needs a minimum sample size of 140 to be 95% confident that their estimate of μ is within $0.35 of the true value.

To achieve this level of confidence, the union needs to determine the minimum sample size required. The sample size is important because it affects the precision of the estimate. A larger sample size generally leads to a more precise estimate.

To find the minimum sample size needed, we need to use a formula that relates the sample size, the confidence level, the standard deviation of the population, and the margin of error. The formula is:

n = (z² * σ²) / E²

where n is the sample size, z is the z-score associated with the desired confidence level (in this case, 1.96 for 95% confidence), σ is the standard deviation of the population, and E is the margin of error (in this case, $0.35).

Plugging in the given values, we get:

n = (1.96² * 2.25²) / 0.35² n = 139.79

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Complete Question:

A union of restaurant and food service workers would like to estimate the mean hourly wage, μ , of food service workers in the U.S. The union will choose a random sample of wages and then estimate μ using the mean of the sample. What is the minimum sample size needed in order for the union to be 95% confident that its estimate is within $0.35 of μ ?

Suppose that the standard deviation of wages of food service workers in the U.S. is about $2.25. Carry your intermediate computations to at least three decimal places. Write your answer as a whole number (and make sure that it is the minimum whole number that satisfies the requirements).

The variable that is most important to the given problem is the number of tents the Army orders. So, correct option is b.

The tentmaker has 60,000 tents in stock, and the Army orders 350 tents for each of its 200 brigades. So, the total number of tents required by the Army is:

350 x 200 = 70,000 tents

As the number of tents ordered by the Army is greater than the number of tents available in the stock, the tentmaker will not have enough tents to fulfill the Army's order.

The price of one tent and the size of each tent are not relevant to the question of whether the tentmaker will have enough tents in stock to fulfill the Army's order. Therefore, option A and option C are not the most important variables in this problem.

So, correct option is b.

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The probability that a randomly chosen customer who likes cake also likes pie is 2/3 or 0.6

To find the probability that a customer who likes cake also likes pie, we need to look at the overlap between the cake and pie circles in the Venn diagram. The diagram shows that 10 customers like both cake and pie, out of a total of 25 customers surveyed.

So, the probability that a randomly chosen customer who likes cake also likes pie is:

P(pie | cake) = number of customers who like both cake and pie / number of customers who like cake

P(pie | cake) = 10/15

P(pie | cake) = 2/3

Therefore, the probability that a randomly chosen customer who likes cake also likes pie is 2/3 or 0.67.

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Answer: 2/3

Step-by-step explanation:

Answer:

[tex] log(x + 7) > log(3x) [/tex]

[tex]x + 7 > 3x[/tex]

[tex]7 > 2x[/tex]

[tex]0 < x < 3.5[/tex]

{x | x > 0 and x < 3.5}

The correct option is b) 7.888. The number of people in the museum is at a maximum at time t ≈ 7.888 hours using Newton-Raphson method.

To find the time t when the number of people in the museum is at a maximum for 1 < t < 11, we need to find the maximum value of the net rate of people entering the museum, which is the difference between the rates of people entering and leaving the museum.

Given the functions f'(t) = 380([tex]1.02^t[/tex])(t – 4) and g'(t) = 240 + 240 sin t, let's define a new function h(t) representing the net rate of people entering the museum:

h(t) = f'(t) - g'(t)

Now, we need to find the critical points of h(t) to locate the maximum value. To do this, we will find the derivative of h(t) and set it equal to 0.

h'(t) = f''(t) - g''(t)

To find the second derivatives, we differentiate f'(t) and g'(t) with respect to t:

f''(t) = 380([tex]1.02^t[/tex])(1 - 4t + [tex]t^2[/tex])
g''(t) = 240 cos t

Now, we find h'(t):

h'(t) = 380(1.02^t)(1 - 4t + [tex]t^2[/tex]) - 240 cos t

Set h'(t) = 0 and solve for t within the interval 1 < t < 11:

380()(1 - 4t + [tex]t^2[/tex]) - 240 cos t = 0

This equation is transcendental and is best solved using a numerical method such as the Newton-Raphson method. Using a calculator or software, we find the approximate value of t as:

t ≈ 7.888

Therefore, the correct option is b) 7.888, the number of people in the museum is at a maximum at time t ≈ 7.888 hours (Option B).

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The volume of this rectangular prism is equal to 114 3/4 cubic inches..

In Mathematics and Geometry, the volume of a rectangular prism can be calculated by using the following formula:

Volume of a rectangular prism = L × W × H

Where:

By substituting the given dimensions (parameters) into the formula for the volume of a rectangular prism, we have the following;

Volume of rectangular prism = 8 1/2 × 3 ×  4 1/2

Volume of rectangular prism = 17/2 × 3 ×  9/2

Volume of rectangular prism = 114 3/4 cubic inches.

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Answer:

a) multiply

b) 16

Step-by-step explanation:

a) To convert a smaller unit of measurement into a larger unit, multiply because more of a smaller unit is required to cover up a larger measurement.

b) We know that there are 16 ounces in a pound, which is the unit rate.