a random variable x has a mean of 10 and a variance of 4. find p(6

Answer:

4

Step-by-step explanation:

(b + c)/2 = 6

b + c = 12

(a + b + c + d)/4 = 5

(a + 12 + d) = 20

a + d = 8

Hence,

the sum of the largest and smallest is 8. The mean has to be 8/2 = 4.

Hope this helps and be sure to mark this as brainliest! :)

Answer:

1) Statistical

2)Not statistical

3)Not statistical

Step-by-step explanation:

If your not sure just visit  it will tell you the answers.

Hope it helps!!

Answer:

yes clearly

Step-by-step explanation:

using rules of divisibility it is divisible

using your calculator it is divisible

the answer is 44

The critical value for a 90% confidence interval can be found using a Z-table or T-table, depending on the sample size and known information about the population.

The 90% confidence interval for µ, the mean score for all students in the school district who are enrolled in gifted and talented programs.

To calculate the 90% confidence interval for µ, the mean score for all students in the school district who are enrolled in gifted and talented programs, you'll need the sample mean, sample standard deviation, and sample size.
The formula for the 90% confidence interval is:
(sample mean) ± (critical value) * (sample standard deviation / √sample size)

The confidence interval is a range of values that is likely to contain the true population parameter (in this case, the mean score for all students in the district). The 90% confidence interval means that if we were to repeat this study multiple times, we would expect the true population means to fall within this range of values 90% of the time.

Without additional information about the sample size, standard deviation, and mean score, I cannot provide you with the exact calculation for the confidence interval. However, the interpretation of the confidence interval would be something like this: "Based on the sample of students in gifted and talented programs, we can be 90% confident that the true population mean score falls within the range of X to Y." This would provide valuable information for educators and administrators who want to assess the performance of gifted and talented students in their district.

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The average length of the queue (Lq) for an M/G/1 system with λ = 20, μ = 35, and σ = 0.005 is Lq = 0.3926 (option B).

To find the average length of the queue (Lq) in an M/G/1 system, we can use the Pollaczek-Khintchine formula:

Lq = (λ² * σ² + (λ/μ)²) / (2 * (1 - (λ/μ)))

Given λ = 20 (arrival rate), μ = 35 (service rate), and σ = 0.005 (standard deviation of service time):

1. Calculate λ/μ: 20/35 = 0.5714
2. Calculate 1 - (λ/μ): 1 - 0.5714 = 0.4286
3. Calculate λ² * σ²: (20²) * (0.005²) = 0.01
4. Calculate (λ/μ)²: (0.5714²) = 0.3265
5. Plug these values into the Pollaczek-Khintchine formula:

Lq = (0.01 + 0.3265) / (2 * 0.4286) = 0.3926 . (B)

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The range for the southern cities is 145 mi² greater than the range for the northern cities.

We must determine the difference between the largest and smallest areas in each group in order to determine the range of the cities.

Minneapolis has the smallest area (58 miles2) and the largest (305 miles2) of the northern cities. Therefore, the northern cities' range is:

305 mi² - 58 mi² = 247 mi²

For the southern cities, the smallest area is 111 mi² (Orlando) and the largest area is 503 mi² (Los Angeles). So the range for the southern cities is:

503 mi² - 111 mi² = 392 mi²

To find how much greater the range is for the southern cities, we subtract the range for the northern cities from the range for the southern cities:

392 mi² - 247 mi² = 145 mi²

As a result, the cities in the south have a range that is 145 miles longer than the cities in the north.

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The dimensions of the rectangle with the largest possible area and a perimeter of 120 meters are 30 meters by 30 meters.

Explanation: -

To find the dimensions of a rectangle with a perimeter of 120 meters and the largest possible area, we need to follow these steps:

Step 1: Given the dimensions x and y, we have the area A = xy. then the perimeter of the rectangle is 2x + 2y = 120. Solving for y, we get y = 60 - x.

Step 2: To maximize the area A = xy, we substitute y with the expression from step 1: A(x) = x(60 - x) = 60x - x^2, where 0 < x < 60.

To find the maximum area, we can use calculus to find the critical points.

Step 3: Find the derivative of the area function, use the formula

d/dx(x^n) =nx^n-1

so that derivative is A'(x) = 60 - 2x.

Step 4: Set A'(x) = 0 and solve for x. In this case, 60 - 2x = 0, so x = 30.

Step 5: Plug x = 30 back into the expression for y: y = 60 - x = 60 - 30 = 30.

The dimensions of the rectangle with the largest possible area and a perimeter of 120 meters are 30 meters by 30 meters.

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The following parts can be answered by the concept of Combination.

a.  The total number of ways to award prizes is 100 x 99 x 98 = 970,200.

b. The total number of ways to award prizes in this scenario is 99 x 98 x 97 = 941,094.

c.  The total number of ways to award prizes in this scenario is 98 x 97 x 96 = 912,192.

d. The grand prize winner is a person holding ticket 8,11 or 23 is 3 x 99 x 98 = 29,178.

a) There are a total of 100 choices for the first prize, 99 choices for the second prize (since one person already won a prize), and 98 choices for the third prize (since two people already won prizes). So, the total number of ways to award prizes is 100 x 99 x 98 = 970,200.

b) If person holding the ticket 23 must get a prize, then there are only 99 choices for the first prize (since ticket 23 is already taken), 98 choices for the second prize, and 97 choices for the third prize. So, the total number of ways to award prizes in this scenario is 99 x 98 x 97 = 941,094.

c) If the person holding ticket 8 and the person holding ticket 11 must win prizes, then there are only 98 choices for the first prize (since tickets 8 and 11 are already taken), 97 choices for the second prize, and 96 choices for the third prize. So, the total number of ways to award prizes in this scenario is 98 x 97 x 96 = 912,192.

d) If the grand prize winner is a person holding ticket 8,11 or 23, then there are only 3 choices for the first prize (since only these three tickets are eligible for the grand prize), 99 choices for the second prize (since one person already won a prize and the grand prize winner is not eligible for the second prize), and 98 choices for the third prize (since two people already won prizes). So, the total number of ways to award prizes in this scenario is 3 x 99 x 98 = 29,178.

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The arrow symbolizes the directional connection from each member in set x to its corresponding member in set y. The members of set y are evident squares of their respective counterparts in set x.

Here is an arrow diagram to show the relation between the sets x and y, where y is the set of all elements in x squared:

     (1, 4, 9)

        / \

       /   \

      /     \

  1, 4, 9  -->  1, 4, 9, 16, 25, 36

       \     /

        \   /

         \ /

(3, 2, 1, -1, -2, -3)

      The arrow symbolizes the directional connection from each member in set x to its corresponding member in set y. The members of set y are evident squares of their respective counterparts in set x.

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To complete the table and find the derivative of the function y = (9x^(3/2))/x without using the quotient rule, we'll rewrite, differentiate, and simplify the function and get dy/dx =  27/2x^(1/2) - 9x^(1/2) .

Step 1: Rewrite the function
y = 9x^(3/2) * x^(-1) (multiply the x term in the denominator by -1 to rewrite the division as multiplication)
Step 2: Differentiate the function using the power rule (dy/dx = nx^(n-1))
dy/dx = 9(3/2)x^(3/2 - 1) - 9x^(3/2 - 1)
Step 3: Simplify the expression
dy/dx = 27/2x^(1/2) - 9x^(1/2)

Your answer: To find the derivative of the function y = (9x^(3/2))/x without using the quotient rule, we rewrote the function, differentiated it, and simplified the result to obtain the derivative dy/dx = 27/2x^(1/2) - 9x^(1/2).

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The perimeter is 58.9

Here we have an isosceles triangle.

To find the length of the sides that aren't the base we can use a trigonometric equation.

sin(60°) = 4*√15/hypotenuse

hypotenuse = 4*√15/sin(60°) = 18.8

The side in the left also measures that.

Now we need the base, we can define the base as:

(b/2)² + (4√15)²  = 18.8²

b²/4 + 16*15 =  18.8²

b = √((18.8² - 16*15)*4)

b = 21.3

Then the perimeter is:

21.3 + 18.8 + 18.8 = 58.9

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The average rate of change of the function between the given values of x. y = 6 3x 0.5x2 between x = 4 and x = 6 is 8

To find the average rate of change of the function y = 6 + 3x + 0.5x^2 between x = 4 and x = 6, we need to find the difference between the y-values at x = 6 and x = 4, and divide by the difference between the x-values.
When x = 4, y = 6 + 3(4) + 0.5(4)^2 = 22
When x = 6, y = 6 + 3(6) + 0.5(6)^2 = 36
The difference in y-values is 36 - 22 = 14.
The difference in x-values is 6 - 4 = 2.
Therefore, the average rate of change of the function between x = 4 and x = 6 is 14/2 = 7.
So, the average rate of change of the function is 7 units per 1 unit change in x between the given values of x.
To find the average rate of change of the function y = 6 + 3x + 0.5x^2 between x = 4 and x = 6, follow these steps:
1. Evaluate the function at x = 4 and x = 6:
y(4) = 6 + 3(4) + 0.5(4^2) = 6 + 12 + 8 = 26
y(6) = 6 + 3(6) + 0.5(6^2) = 6 + 18 + 18 = 42
2. Calculate the average rate of change:
Average rate of change = (y(6) - y(4)) / (6 - 4) = (42 - 26) / 2 = 16 / 2 = 8
So, the average rate of change of the function between x = 4 and x = 6 is 8.

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Answer:

∠ A = 60° , ∠ B = 30°

Step-by-step explanation:

using the cosine ratio in the right triangle

cosA = [tex]\frac{adjacent}{hypotenuse}[/tex] = [tex]\frac{AC}{AB}[/tex] = [tex]\frac{7}{14}[/tex] = [tex]\frac{1}{2}[/tex] , then

∠ A = [tex]cos^{-1}[/tex] ( [tex]\frac{1}{2}[/tex] ) = 60°

the sum of the 3 angles in Δ ABC = 180°

∠ A + ∠ B + ∠ C = 180°

60° + ∠ B + 90° = 180°

∠ B + 150° = 180° ( subtract 150° from both sides )

∠ B = 30°

The maximum amount of funds that Entrepreneur Bill should raise typically depends on various factors such as the growth potential of the business, the market demand, and the financial needs of the company.

However, a general rule of thumb is that entrepreneurs should not raise more than 25% to 30% of the company's worth in a single fundraising round.

So, if his company is worth $15 million, the maximum amount of funds that Entrepreneur Bill should raise is around $3.75 million. This will help him maintain a fair ownership stake in the company while also ensuring that he has enough funds to achieve his business goals.

It is important to note that this is just a rough estimate and every business is unique. Entrepreneur Bill should seek the advice of experienced investors or financial advisors to determine the appropriate amount of funds to raise for his specific business needs.

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Sample size of at least 23 is required to be 99% confident that our estimate of the population mean is within ±6.

To calculate the required sample size, we can use the formula:

n = (Zα/2 * σ / E)²
Where:
n = sample size
Zα/2 = the Z-score for the desired confidence level, which is 2.58 for 99%
σ = the population standard deviation (assumed to be given)
E = the desired margin of error, which is 6 in this case.

Substituting these values, we get:

n = (2.58 * σ / 6)²

Since the population standard deviation is not given, we cannot find the exact sample size. However, we can use an estimated value of σ based on prior knowledge or a pilot study.

For example, if we assume σ = 10, then the sample size required would be:

n = (2.58 * 10 / 6)² = 22.25 ≈ 23

Therefore, we would need a sample size of at least 23 to be 99% confident that our estimate of the population mean is within ±6.

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The required answer is 2y = x / (x + 2)

To find the equation of the slant asymptote for y = (x^2)/(2x + 2), we can perform long division or synthetic division to divide x^2 by 2x + 2. The result is y = (1/2)x - 1. Therefore, the equation of the slant asymptote is y = (1/2)x - 1.

The asymptotes most commonly encountered in the study of calculus are of curves of the form y = ƒ(x). These can be computed using limits and classified into horizontal, vertical and oblique asymptotes depending on their orientation. Horizontal asymptotes are horizontal lines that the graph of the function approaches as x tends to +∞ or −∞. As the name indicates they are parallel to the x-axis. Vertical asymptotes are vertical lines (perpendicular to the x-axis) near which the function grows without bound.

It seems there might be some typos in the given function. I believe you meant the function to be written as y = (x^2 + 2x) / 2y. To find the equation of the slant asymptote, follow these steps:

Step 1: Rewrite the given function with proper notation:
y = (x^2 + 2x) / (2y)

Step 2: Solve for x in terms of y:
2y = x^2 + 2x
2yx = x^2 + 2x

Step 3: Factor out x on the right side:
2yx = x(x + 2)

Step 4: Divide both sides by (x + 2):
2y = x / (x + 2)

This equation represents the slant asymptote of the given function.

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Answer: 8,600

Zach's gross capital gain can be calculated as follows:

Total proceeds from selling the stock = 200 shares x $43/share = $8,600

Total cost of buying the stock = 200 shares x $21.35/share = $4,270

Gross capital gain = Total proceeds - Total cost = $8,600 - $4,270 = $4,330

Therefore, Zach's gross capital gain from selling 200 shares of Goshen stock is $4,330.

The probability that z is between -2.33 and 2.33 for a standard normal distribution with a mean of 0 and standard deviation of 1 is approximately 0.9802, or 98.02%. Here, he probability that z is between -2.33 and 2.33 for a standard normal distribution with a mean of 0 and a standard deviation of 1, you'll need to use a standard normal distribution table or a calculator with a built-in z-table function.

Step-by-step explanation:
Step:1. Identify the given values: Mean (µ) = 0, Standard Deviation (σ) = 1, and the range of z-scores is between -2.33 and 2.33.
Step:2. Use a standard normal distribution table or a calculator with a built-in z-table function to find the probabilities associated with z = -2.33 and z = 2.33.
Step:3. Look up the probability of z = -2.33 in the table, which should be approximately 0.0099.
Step:4. Look up the probability of z = 2.33 in the table, which should be approximately 0.9901.
Step:5. Subtract the probability for z = -2.33 from the probability for z = 2.33 to find the probability of z being between these two values: P(-2.33 < z < 2.33) = P(z = 2.33) - P(z = -2.33) = 0.9901 - 0.0099 = 0.9802
The probability that z is between -2.33 and 2.33 for a standard normal distribution with a mean of 0 and standard deviation of 1 is approximately 0.9802, or 98.02%.

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Answer:

To find the best deal, we must get the value of 1 oz for each of the boxes.

Box 1: 1.12 divided by 16 equals 0.07 / oz

Box 2: 1.92/32 equals 0.06 / oz

5 LB Box = 80 OZ

Box 3: 4/80 = 0.05 / oz

The third box is the best deal.

Answer:

54 square centimeters

Step-by-step explanation:

The area of a trapezium can be calculated by taking the average of the parallel sides and multiplying by the height. So, the area of this trapezium is:

(7 + 11) / 2 * 6 = 9 * 6 = 54 cm^2

Therefore, the area of the trapezium is 54 square centimeters.

Hope this helps!

Answer:

the area of the trapezium is 54 square centimeters.

Step-by-step explanation:

Given:

Parallel side 1 = 7cm

Parallel side 2 = 11cm

Height = 6cm

We can use the formula for the area of a trapezium, which is:

Area = (Sum of parallel sides / 2) × Height

Plugging in the values we have:

Area = ((7 + 11) / 2) × 6

Now, let's simplify the equation:

Area = (18 / 2) × 6

Area = 9 × 6

Area = 54

So, the area of the trapezium is 54 square centimeters.

Answer:

(x, y) (124/7, 62/7)

Step-by-step explanation:

substitute x with 2y we get

4(2y)-y=62

8y-y=62

7y=62

y=62/7

substitute the value of y into the second eqaution

2(62/7)=x

124/7=x

substitute your values of x and y into the first eqaution to check if they are solutions

4(124/7)-62/7=62

you will get

62=62

which means they are solutions

The inverse Laplace transform of 1/s(s^2 + 36) using the convolution theorem is (1/6)sin(6t) + (1/6)cos(6t).

First, we need to find the Laplace transform of the given function 1/s(s^2 + 36). We can use the table of Laplace transforms to find that L{1/s(s^2 + 36)} = (1/6)sin(6t).

Next, we need to find the Laplace transform of the function f(t) = cos(6t)u(t), where u(t) is the unit step function. Using the table of Laplace transforms, we find that L{cos(6t)u(t)} = (s)/(s^2 + 36).

Now, we can apply the convolution theorem, which states that the inverse Laplace transform of the product of two functions in the frequency domain is equal to the convolution of their inverse Laplace transforms in the time domain.

The convolution of (1/6)sin(6t) and (s)/(s^2 + 36) is given by the integral of (1/6)sin(6(t - τ)) * (s)/(s^2 + 36) dτ from 0 to t.

To solve the integral, we can use partial fraction decomposition. We can express (s)/(s^2 + 36) as (A/s) + (B(s)/(s^2 + 36)), where A and B are constants to be determined.

Solving for A and B, we get A = 1/6 and B(s) = -s/6.

Substituting A and B(s) back into the integral and evaluating the integral, we get (1/6)sin(6t) + (1/6)cos(6t).

Therefore, the inverse Laplace transform of 1/s(s^2 + 36) using the convolution theorem is (1/6)sin(6t) + (1/6)cos(6t).

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Answer:

The shape formed is a quadrilateral.

Step-by-step explanation:

The four points A(-1,0), B(0,2), C(4,0), and D(3,-2) can be used to form a quadrilateral. To identify the shape formed by these points, we can use the distance formula to find the length of each side of the quadrilateral, and then compare the side lengths.

AB: Distance between A(-1,0) and B(0,2)

= sqrt((0 - (-1))^2 + (2 - 0)^2)

= sqrt(1 + 4)

= sqrt(5)

BC: Distance between B(0,2) and C(4,0)

= sqrt((4 - 0)^2 + (0 - 2)^2)

= sqrt(16 + 4)

= sqrt(20)

= 2 sqrt(5)

CD: Distance between C(4,0) and D(3,-2)

= sqrt((3 - 4)^2 + (-2 - 0)^2)

= sqrt(1 + 4)

= sqrt(5)

DA: Distance between D(3,-2) and A(-1,0)

= sqrt((-1 - 3)^2 + (0 - (-2))^2)

= sqrt(16 + 4)

= 2 sqrt(5)

Since the length of AB is not equal to the length of CD, and the length of BC is not equal to the length of DA, we can conclude that the quadrilateral formed by these four points is not a parallelogram or a rhombus. Additionally, since the length of AB is not equal to the length of CD, we can conclude that the quadrilateral is not a kite.

By comparing the angles formed by the line segments AB, BC, CD, and DA, we can see that the angle at B is a right angle, while the other three angles are all acute angles. This indicates that the quadrilateral is a trapezoid. Specifically, it is a right trapezoid, since it has one right angle.

Every odd composite integer is a pseudoprime to both the base 1 and the base -1.

A pseudoprime is a composite number that behaves like a prime number with respect to a particular base. In other words, a pseudoprime passes a primality test for a given base even though it is not actually prime.

Base 1:When we consider the base 1, any integer raised to the power of 1 is equal to the integer itself. Therefore, for any odd composite integer n, we have 1^(n-1) ≡ 1 (mod n) by Fermat's Little Theorem. This implies that n passes the primality test for base 1 and is a pseudoprime.

Base -1:When we consider the base -1, any integer raised to the power of an even number is always 1, and any integer raised to the power of an odd number is always -1. Therefore, for any odd composite integer n, we have (-1)^(n-1) ≡ -1 (mod n), as (n-1) is always an even number. This implies that n passes the primality test for base -1 and is a pseudoprime.

In conclusion, every odd composite integer is a pseudoprime to both the base 1 and the base -1, as it satisfies the conditions mentioned above.

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Answer:

  d = 8 mm

Step-by-step explanation:

You want the length of the other diagonal of a rhombus when one of them has length 35 mm and the area of the rhombus is 140 mm².

The area of a rhombus is half the product of the lengths of the diagonals:

  A = 1/2(d1)(d2)

  140 mm² = 1/2(35 mm)(d)

  (280 mm²)/(35 mm) = d = 8 mm

The length of the missing diagonal is 8 mm.

The linear interpolation spline between points (0,1) and (1,0) for x=1/2 is y=1/2. The quadratic interpolation spline using (0,1), (1,0), and (5/2,0) is y=-8/5x^2 + 9/5x + 1 for x in [1/2,5/2].

To find the linear interpolation spline and quadratic interpolation spline, we can use the following formulas

For linear interpolation, the spline between data points (x1,y1) and (x2,y2) is given by

y = y1 + (y2-y1)/(x2-x1)*(x-x1)

For quadratic interpolation, the spline between data points (x1,y1), (x2,y2) and (x3,y3) is given by

y = y1*((x-x2)(x-x3))/((x1-x2)(x1-x3)) + y2*((x-x1)(x-x3))/((x2-x1)(x2-x3)) + y3*((x-x1)(x-x2))/((x3-x1)(x3-x2))

To find the linear interpolation spline, we can use the points (0,1) and (1,0) since they are the nearest neighbors to x = 1/2:

y = 1 + (0-1)/(1-0)*(1/2-0) = 1/2

Therefore, the linear interpolation spline is y = 1/2 for x in [1/2,1].

To find the quadratic interpolation spline, we need to use three neighboring points. We can use (0,1), (1,0), and (5/2,0) since they are the three nearest neighbors to x = 1/2. Substituting these values into the formula, we get

y = 1*((x-1)(x-5/2))/((0-1)(0-5/2)) + 0*((x-0)(x-5/2))/((1-0)(1-5/2)) + 0*((x-0)(x-1))/((5/2-0)(5/2-1))

Simplifying, we get:

y = -8/5x^2 + 9/5x + 1

Therefore, the quadratic interpolation spline is y = -8/5x^2 + 9/5x + 1 for x in [1/2,5/2].

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According to the information, we can express the vector w as a linear combination of v1, v2, and v3 like this: w = -v1 - 5v2 - 3v3

We can express the vector w as a linear combination of v1, v2, and v3. Let's say:

w = c1 v1 + c2 v2 + c3 v3

We can find the values of c1, c2, and c3 using the dot product properties of orthogonal vectors. Since v1, v2, and v3 are orthogonal:

w ⋅ v1 = (c1 v1 + c2 v2 + c3 v3) ⋅ v1 = c1 (v1 ⋅ v1) = 6c1

w ⋅ v2 = (c1 v1 + c2 v2 + c3 v3) ⋅ v2 = c2 (v2 ⋅ v2) = 18c2

w ⋅ v3 = (c1 v1 + c2 v2 + c3 v3) ⋅ v3 = c3 (v3 ⋅ v3) = 25c3

Using the given values, we can set up a system of equations:

-6 = 6c1 + 0c2 + 0c3

-90 = 0c1 + 18c2 + 0c3

-75 = 0c1 + 0c2 + 25c3

Solving for c1, c2, and c3, we get:

c1 = -1

c2 = -5

c3 = -3

Therefore, we have:

w = -v1 - 5v2 - 3v3

Note: The solution is not unique, as any linear combination of v1, v2, and v3 that satisfies the given dot product conditions would work.

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In a right-skewed distribution, the correct answer is b. the median is less than the mean. In a right-skewed distribution, the data has a longer tail on the right side, indicating that there are more values greater than the mean. This causes the mean to be greater than the median.

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Answer:

9

Step-by-step explanation:

because if she can make 3 in 15minutes then 45 minutes is triple the time so triple the bracelets please give brainliest bye have a good day :D