Josiah kept track of how many songs of each genre were played in an hour from his MP3 player. The counts are displayed in the table below. He has a total of 1,500 songs on his player. Josiah predicted the number of rock songs on his MP3 player to be 300 songs. Which statements about his solution are true? Select three choices. Josiah’s Music Sample 1 Sample 2 R & B 5 R & B 4 Pop 4 Pop 3 Classical 3 Classical 5 Jazz 2 Jazz 4 Rock 6 Rock 4 Josiah’s work: StartFraction 10 over 20 EndFraction = StartFraction x over 1,500 EndFraction. StartFraction 10 times 30 over 20 times 30 EndFraction = StartFraction x over 1,500 EndFraction. 300 = x. He should have found the average of the number of rock songs by averaging 4 and 6 to get 5. He did not multiply the numerator and denominator by the correct number to equal 1,500. His answer will be one-half of what he got because he did not divide 10 by 2 when setting up the proportion. He can only solve the proportion by multiplying the numerator and denominator by a common multiple. He should have multiplied the numerator and denominator by 75, not 30, because 20 times 75 = 1,500.

Answer:       10% chance / 10/100

Step-by-step explanation:

Convert it so that when you add all the numbers they will equal 100

4+6+3+5+2=20  make it so it equals 100=

*5

20+30+15+25+10 = 100

10%=brown

The lateral area οf a cylinder is calculated as L = 2rh, where r is the radius οf the base and h is the height οf the cylinder.

In several current branches οf geοmetry and tοpοlοgy, a cylinder can alsο be defined as an infinitely curvilinear surface. There is sοme ambiguity in terminοlοgy due tο the change in the basic meaning οf the wοrds—sοlid versus surface (as in ball and sphere).

By cοmparing sοlid cylinders and cylindrical surfaces, the twο ideas can be separated. Bοth οf these οr a mοre specialised οbject, the right circular cylinder, may be referred tο simply as "cylinder" in literary wοrks.

First, we must calculate the radius οf the cylinder, which is half its diameter.

Sο the radius is 14/2 = 7 meters.

Then, we can plug in the values we have intο the fοrmula: L = 2 × 3.14 × 7 × 13 ≈ 572 square meters.

Therefοre, the answer is A) 572 square meters, rοunded tο the nearest square meter.

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Answer:

The two figures are not equal because 3/5 doesn't does not equal 6/9

Step-by-step explanation:

The numbers just aren't equal.

Answer:

Area of the parallelogram = 120 square units

Area of the triangle = 17.5 square units

Area of the trapezoid = 372 square units

Step-by-step explanation:

The first polygon is a parallelogram with a base of 15 units and a height of 8 units.

[tex]\begin{aligned}\sf Area\;of\;a\;parallelogram&=\sf base \times height\\&=\sf 15 \times 8\\&=\sf 120\;square\;units\end{aligned}[/tex]

Therefore, the area of the parallelogram is 120 square units.

[tex]\hrulefill[/tex]

The second polygon is a triangle with a base of 5 units and a height of 7 units.

[tex]\begin{aligned}\sf Area\;of\;a\;triangle&=\sf \dfrac{1}{2} \times base \times height\\\\&=\sf \dfrac{1}{2} \times 5 \times 7\\\\&=\sf 17.5\;square\;units\end{aligned}[/tex]

Therefore, the area of the triangle is 17.5 square units.

[tex]\hrulefill[/tex]

The third polygon is a trapezoid with bases of 7 units and 24 units, and a height of 24 units.

[tex]\begin{aligned}\sf Area\;of\;a\;trapezoid&=\sf \dfrac{sum\;of\;bases}{2} \times height\\\\&=\sf \dfrac{7+24}{2} \times 24\\\\&=\sf \dfrac{31}{2}\times 24\\\\&=\sf 372\;square\;units\end{aligned}[/tex]

Therefore, the area of the trapezoid is 372 square units.

Answer:

see below

Step-by-step explanation:

To find:-

Answer:-

There are three polygons viz parallelogram, triangle and a trapezium. To find out the areas we can use the following formulae :-

Area of triangle :-

Area of parallelogram:-

Area of trapezium:-

Now we may use the above formulae as ,

Area of the given parallelogram:-

→ A = base * height

→ A = * 15 * 8

→ A = 120units²

Area of the given triangle:-

→ A = 1/2 * b * h

→ A = 1/2 * 5 * 7

→ A = 17.5 units²

Area of the given trapezium:-

→ A = 1/2 * sum of || sides* distance between them

→ A = 1/2 * (7+24) * 24

→ A = 12 * 31

→ A = 372 units ²

This is our required answers .

it would be 8000 because of the interception

Answer:

Assuming that the dry cleaners, restaurant, and gift shop are all located on a grid, we need to know how many grid lines Pamela crossed to determine how far she walked. Without that information, it's impossible to calculate the distance.

The amount of money that the student would saved altogether by paying off the loan in 3 years instead of 4 is $538.48.

To find out how much the student will save by paying off the loan in 3 years instead of 4 years, we will first calculate the monthly payments for each repayment period using the loan payment formula.

P = L x (r(1 + r)^n) / ((1 + r)^n - 1)

P 4years = 9,000 x (0.008333 x (1 + 0.008333)^48) / ((1 + 0.008333)^48 - 1)

P 4years = $228.17

For the 3-year repayment plan:

n = 3 years * 12 months/year = 36 payments

P 3years = 9,000 x (0.008333 x (1 + 0.008333)^36) / ((1 + 0.008333)^36 - 1)

P 3years = $289.28

Savings = Total in 4years - Total in 3years

= $10,952.16 - $10,413.68

=  $538.48

By paying off the loan in 3 years instead of 4 years, the student will save approximately $538.48.

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Answer:

y = (5e + 5sqrt(3) + 5) / (1 + (e + sqrt(3)) * e^(-t))

Step-by-step explanation:

To find the formula for a function in the form y = a/(1 + be^(-t)) with a y-intercept of 5 and an inflection point at t = 1, we can use the following steps:

Step 1: Find the value of a

Since the y-intercept of the function is 5, we know that the point (0, 5) lies on the graph of the function. So, we substitute t = 0 and y = 5 into the equation and solve for a:

5 = a / (1 + be^(0))

5 = a / (1 + b1)

5 = a / (1 + b)

a = 5*(1 + b)

Step 2: Find the value of b

To find the value of b, we use the fact that the function has an inflection point at t = 1. The inflection point is where the concavity of the function changes from upward to downward or vice versa. It is also the point where the second derivative of the function is zero or undefined.

The first derivative of the function is:

y' = -abe^(-t) / (1 + b*e^(-t))^2

The second derivative of the function is:

y'' = abe^(-t)(be^(-t) - 2) / (1 + b*e^(-t))^3

Setting t = 1 and y'' = 0, we get:

0 = abe^(-1)(be^(-1) - 2) / (1 + b*e^(-1))^3

Simplifying and using the value of a from Step 1, we get:

0 = 5be^(-1)(be^(-1) - 2) / (1 + b*e^(-1))^3

Multiplying both sides by (1 + be^(-1))^3 and simplifying, we get:

0 = 5b^2e^(-2) - 10b*e^(-1) + 1

Solving for b using the quadratic formula, we get:

b = (10e^(-1) ± sqrt(100e^(-2) - 451e^(-2))) / (25*e^(-2))

b = (2e + sqrt(4e^2 - e^2)) / (2e^(-1))

b = e + sqrt(3)

Step 3: Write the function in the form y = a/(1 + be^(-t))

Using the values of a and b from Steps 1 and 2, we get:

a = 5*(1 + b) = 5*(1 + e + sqrt(3)) = 5e + 5sqrt(3) + 5

b = e + sqrt(3)

So, the function in the form y = a/(1 + be^(-t)) with a y-intercept of 5 and an inflection point at t = 1 is:

y = (5e + 5sqrt(3) + 5) / (1 + (e + sqrt(3)) * e^(-t))

If line m parallel to line n, the value of y in terms of x is y = 3x + 10.

Let's consider the given information: a diagram with line m parallel to line n, and an angle (3x + 10)°.
Since line m is parallel to line n, we can use the properties of parallel lines and their transversals to find the relationship between x and y.

In this case, we'll use the property called alternate interior angles, which states that if two parallel lines are cut by a transversal, their alternate interior angles are congruent.
Identify the alternate interior angles.
Let's say the angle (3x + 10)° is an alternate interior angle to angle y°.
Use the property of alternate interior angles.
Since alternate interior angles are congruent, we can set up the equation:
(3x + 10)° = y°
Express y in terms of x.
Now that we have the equation, we can express y in terms of x:
y = 3x + 10
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Question -

A diagram with line m parallel to line n is shown express the value of y in terms of x

The probability of no successes in eight trials of a binomial experiment with a probability of success of 7% is 0.6%

Probability is a measure of the likelihood or chance of an event occurring. It is expressed as a number between 0 and 1, where 0 indicates that the event is impossible, and 1 indicates that the event is certain to occur.

Probability can be calculated by dividing the number of favorable outcomes by the total number of possible outcomes. The resulting value represents the likelihood of the event occurring. For example, if a coin is tossed, the probability of it landing heads up is 0.5 (assuming a fair coin), because there is one favorable outcome (heads) out of two possible outcomes (heads or tails).

The probability of no successes in eight trials of a binomial experiment can be calculated using the binomial probability formula:

P(X = 0) = (n choose k) × pᵏ × (1-p)ⁿ⁻ᵏ

where:

n = number of trials = 8

k = number of successes = 0

p = probability of success = 7% = 0.07

Substituting the values in the formula, we get:

P(X = 0) = (8 choose 0) × 0.07⁰ × (1-0.07)⁸⁻⁰

= 1 × 1 × 0.569

= 0.569

Therefore, the probability of no successes in eight trials of a binomial experiment with a probability of success of 7% is 0.6%, rounded to the nearest tenth of a percent.

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Answer:

(a) Missing x:8 Missing y:23

Step-by-step explanation:

Answer:

16/3 or 5 1/3

Step-by-step explanation:

multiply than simplify

To create a histogram of the number of years that each of the nine Omar's Omelette Operation locations has been open, we can start by organizing the data into groups or bins.

A histogram is a graphical representation of a distribution of data, typically shown as bars of different heights. In this case, we can use bins of equal width, such as 1 or 2 years. Then, we can count the number of values that fall into each bin and represent this count as the height of the corresponding bar.

For example, if we use bins of width 2 years, we can group the data into the following bins: [0, 2), [2, 4), [4, 6), [6, 8), [8, 10), and [10, 12). Then, we can count the number of values that fall into each bin and create a bar chart with bars of different heights corresponding to these counts.

The resulting histogram would show the distribution of the number of years that the Omar's Omelette Operation locations have been open, and we could use it to analyze the central tendency, variability, and shape of the data.

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(A)  the annual rate of change between 1992 and 2006 was 0.0804

(B) r = 0.0804 * 100% = 8.04%

(C) value in 2009 = $11,650

What is the rate of change?

The rate of change is a mathematical concept that measures how much one quantity changes with respect to a change in another quantity. It is the ratio of the change in the output value of a function to the change in the input value of the function. It describes how fast or slow a variable is changing over time or distance.

A) The initial value is $44,000 and the final value is $15,000. The time elapsed is 2006 - 1992 = 14 years.

Using the formula for an annual rate of change (r):

final value = initial value * [tex](1 - r)^t[/tex]

where t is the number of years and r is the annual rate of change expressed as a decimal.

Substituting the given values, we get:

$15,000 = $44,000 * (1 - r)¹⁴

Solving for r, we get:

r = 0.0804

So, the annual rate of change between 1992 and 2006 was 0.0804 or approximately 0.0804.

B) To express the rate of change in percentage form, we need to multiply by 100 and add a percent sign:

r = 0.0804 * 100% = 8.04%

C) Assuming the car value continues to drop by the same percentage, we can use the same formula as before to find the value in the year 2009. The time elapsed from 2006 to 2009 is 3 years.

Substituting the known values, we get:

value in 2009 = $15,000 * (1 - 0.0804)³

value in 2009 = $11,628.40

Rounding to the nearest $50, we get:

value in 2009 = $11,650

Hence, (A) the annual rate of change between 1992 and 2006 was 0.0804

(B) r = 0.0804 * 100% = 8.04%

(C) value in 2009 = $11,650

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The cost of producing 250 candidate posters is K400, and that 660 potential posters can be provided for K2500. This means that K400 + (x - 250) * K5 + K50 = K2500, and that K400 + (x - 250) * K5 + K50 = K2500. Finally, K400 + (x - 250) * K5 + K50 = K2500, and that K400 = 250.

The unitary method is a mathematical approach used to handle proportional and rate issues. We obtain the value of one unit of a quantity and then use it to get the value of any other quantity that is proportional to it using this procedure.

This generally recognized ease, preexisting variables, and any significant elements from the initial Diocesan customizable query may all be used to complete the task. If so, your may have another chance to interact alongside the item. Otherwise, all important influences on how algorithmic proof acts will be eliminated.  

Here,

(a)

=>  C(x) = K400 for 0  x  250.

=>  C(x) = K400 + (x - 250) * K5 + K50 for x > 250

(b)

(i)

=> C(1250) = K400 + (1250 - 250) * K5 + K50

=> K400 + 1000*K5 + K50

=>  K5400

In light of this, the cost to produce 1250 candidate posters is K5400.

We use the first portion of the charging function since 250  250 to determine the cost for printing 250 candidate posters. So:

=> C(250) = K400

Therefore, K400 is required to produce 250 candidate posters.

(ii)

=> K400 + (x - 250) * K5 + K50 = K2500

=>  (x - 250) * K5 = K2050

=>  x - 250 = 410

Therefore, 660 potential posters can be provided for K2500.

=>  C(x) = K400

=>  x = 250

250 applicant posters can be provided for K400 as a result.

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The polynomial 6x² - 8x is factored to (3x - 4)(2x 1). The polynomial 6x² - 3x 8x - 4 is factored to (2x - 1)(3x 4).

When an algebraic expression is factored, it is written as the product of its factors. Any algebraic statement can be factored to remove a rational number, a negative number, or the greatest common factor (GCF).

The polynomial 6x² - 8x is factored to (3x - 4)(2x 1).

For this polynomial, first identify the greatest common factor (GCF).

This is GCF  2x.

Divide the polynomial by the GCF to get 3x - 4 and 2x 1.

These two terms can be multiplied by the factor (3x - 4) (2x 1).

The polynomial 6x² - 3x 8x - 4  (2x - 1)(3x 4) is factored. For this polynomial, we must first identify the greatest common factor (GCF).

In this case, the GCF is 2x - 1. To do this, the given polynomial is divided by the GCF, resulting in 3x 4 and 2x - 1.

These two terms can be multiplied to give the quotient (2x - 1)(3x4)

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Answer: To add the polynomials, we simply add the coefficients of the same degree terms. This gives:

(3x^2 - x - 8) + (7x^2 - 9x - 1) = 10x^2 - 10x - 9

Therefore, the sum of the polynomials is 10x^2 - 10x - 9.

Step-by-step explanation:

The difference between the area of the rectangle and the area of the triangles is 56 units.

Area of the rectangle = 8 * 16

Area of the rectangle = 128 units

Area of triangle 1 = ¹/₂ * 4 * 12

Area of triangle 1 = 24 units

Area of triangle 2 =  ¹/₂ * 4 * 16

Area of triangle 2 = 32 units

Area of triangle 2 =  ¹/₂ * 4 * 8

Area of triangle 2 =  16 units

Area of rectangle - area of triangle = 128 - ( 24 + 32 + 16)

Area of the rectangle - the area of the triangles = 56 units

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Answer:

0

Step-by-step explanation:

since X= -2 and -2 < -1

f(-2)= (-2) +2

=0

Good luck

f( - 2 ) = 0 for the given piecewise function.

To find f( - 2 ) for the given piecewise function, we need to determine which part of the function applies to the input value x = - 2.

Since - 2 is less than or equal to - 1, we use the first part of the function where f(x) = x + 2 for x ≤ - 1.

Now, substitute x = - 2 into the first part of the function:

f( - 2 ) = ( - 2 ) + 2

f( - 2) = 0

So, f( - 2 ) = 0 for the given piecewise function.

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The probability that a particular bulb will last from 2772 to 3298 hours is 2.66.

In mathematics, the term average is referred to as the mean value, which is equal to the ratio of the sum of all the values in a given set to all the values in the set.

Here we have been given,

A brand of lightbulb lasts on average 2821 hours with a standard deviation of 197 hours.

Assuming the life of the lightbulb is normally distributed, and we need to find the probability that a particular bulb will last from 2772 to 3298 hours.

According to the given problem, we know that the value of the following is defined as follows:

Average = 2821

Standard deviation = 197

Now, based on the z score concept, the value of the required probability is calculated as,

=> z = (x-mean)/ sd

=> z lower = (2821 - 3298)/197= -2.42

=> z upper = (2821- 2772)/197= 0.24

Therefore, the probability is calculated as,

=> z upper - z lower

=> 0.24 - (-2.42)

=> 2.66

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Answer:

x< 4 or x>4

Interval Notation  [tex]\left(-\infty \:,\:4\right)\cup \left(4,\:\infty \:\right)\\[/tex]

Step-by-step explanation:

its D

A grouping of at least three distinct rectangles, each with a 28-unit perimeter:2 and 12; 5 and 9; and 8 and 6.

To create the table, we start with the original rectangle with dimensions 10 and 4. To find other rectangles with the same perimeter, we can change the length and width while still ensuring that their sum is 14 (half of the original perimeter).

Since the perimeter of the rectangle is 28 units, we can use the formula:

Perimeter = 2(length + width)

where length and width are the dimensions of the rectangle.

If we solve for length, we get:

length = (Perimeter - 2*width) / 2

Using this formula, we can create a table of at least 3 different rectangles that have a perimeter of 28 units:

Width (units) Length (units)

2 12

5 9

8 6

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the perpendicular or opposite side is approximately 10.42 units long.

How to solve the triangle?

In a right triangle, the side opposite the 90-degree angle is called the hypotenuse, and the side opposite the 15-degree angle is called the opposite side or perpendicular. The third side, adjacent to the 15-degree angle and the right angle, is called the adjacent side.

Using trigonometric functions, we can relate the angles and sides of a right triangle. In this case, we can use the tangent function, which is defined as the ratio of the opposite side to the adjacent side:

tan(15) = opposite/adjacent

We are given the hypotenuse, which is the hypotenuse, and we can use the Pythagorean theorem to find the adjacent side:

adjacent = sqrt(hypotenuse² - opposite²)

Substituting the value of the hypotenuse and rearranging the above equation we get:

opposite = √(hypotenuse² / (1 + tan(15)²))

Plugging in the values, we get:

opposite = √(12² / (1 + tan(15)²))

= √(144 / (1 + 0.2679))

= ²(108.5)

= 10.42

Therefore, the perpendicular or opposite side is approximately 10.42 units long.

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The expression (6x10⁻³)(1.4x10¹) have the solution in scientific notation as 8.4 x 10⁻². Very large or small numbers can be more easily understood when written in scientific notation.

A number can be expressed using scientific notation if it cannot be conveniently expressed in decimal form due to its size or shape, or if doing so would require writing out an abnormally long string of digits. In the UK, it is also referred to as standard form, standard index form, and standard form.

Although we are aware that complete numbers can never end, yet we are unable to put such massive sums of data on paper. The numbers that appear at the millions place after the decimal also have to be represented using a more straightforward approach. A small number of integers might be difficult to portray in their larger form because of this. We use scientific notation as a result.

Given:

= (6x1.4)(10⁻³x10¹) = (8.4x10¹)(10⁻²)

= 8.4x (10¹ x 10⁻²)

= 8.4x (10¹ x 10⁻²)

= 8.4 x 10⁻²

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The equations that do not have a solution are B, D, E, and G.

We can solve each equation to check if it has a solution or not:

A. 3x+1=2x+5

Subtracting 2x from both sides, we get x = 4. This equation has a solution.

B. 4(x-1)+2x=6x+5

Expanding the left side, we get 4x - 4 + 2x = 6x + 5. Simplifying, we get 6x - 4 = 6x + 5, which is not possible. This equation does not have a solution.

C. x+1=2x

Subtracting x from both sides, we get x = 1. This equation has a solution.

D. 10x+1=5x-6

Subtracting 5x from both sides, we get 5x + 1 = -6. This equation does not have a solution.

E. 3x+7=3x-6

Subtracting 3x from both sides, we get 7 = -6. This equation does not have a solution.

F. 4x=5x

Subtracting 4x from both sides, we get x = 0. This equation has a solution.

G. x=x+7

Subtracting x from both sides, we get 0 = 7. This equation does not have a solution.

H. x+4=2(x+4)

Expanding the right side, we get x + 4 = 2x + 8. Subtracting x from both sides, we get 4 = x + 8. Subtracting 8 from both sides, we get -4 = x. This equation has a solution.

Therefore, the equations that do not have a solution are B, D, E, and G.

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There are 26.52 cubic feet of sand in the container and the container can hold an additional 14.56 cubic feet of sand.

What is the volume of a rectangular figure?

The volume of the figure is given by:

Volume = length × width × height

Given, a rectangular container 6.5 ft long, 3.2 ft wide, and 2 ft high is filled with sand to a depth of 1.3 ft.

The volume of the container is given by:

Volume = length × width × height = 6.5 ft × 3.2 ft × 2 ft = 41.6 cubic feet

Volume of sand = length × width × depth of sand = 6.5 ft × 3.2 ft × 1.3 ft = 26.52 cubic feet

Therefore, there are 26.52 cubic feet of sand in the container.

To calculate how much more sand the container can hold, you need to find the remaining volume of the container. The remaining depth of the container is:

Remaining depth = height - depth of sand = 2 ft - 1.3 ft = 0.7 ft

The remaining volume of the container is:

Remaining volume = length × width × remaining depth = 6.5 ft × 3.2 ft × 0.7 ft = 14.56 cubic feet

Therefore, the container can hold an additional 14.56 cubic feet of sand.

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The cost of the 2.5 points is $5,000.

The cost of the points is based on the loan amount, which is the sale price minus the down payment:

Loan amount = $255,000 - $55,000 = $200,000

Points are typically calculated as a percentage of the loan amount. In this case, the Nicols are paying 2.5 points, which means they are paying 2.5% of the loan amount.

Cost of points = 2.5% of $200,000 = $5,000

Therefore, the cost of the 2.5 points is $5,000.

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The length of XZ in adjoining figure  is 80/3 cm

Rectangular surfaces refer to flat two-dimensional shapes that have four straight sides and four right angles, where opposite sides are parallel and equal in length. They are called rectangular because they can be formed by taking a rectangle and flattening it out into a plane. Examples of rectangular surfaces include sheets of paper, computer screens, tabletops, and walls of rectangular rooms. The area of a rectangular surface is calculated by multiplying the length and width of the rectangle.

Let the length, width, and height of the rectangular prism be x, y, and z, respectively. Then, we have:

xy = 720 (since the area of the rectangular surfaces of the prism is 720 sq. cm)

XX' = 20

Let XY = 5k, XZ = 4k, and YZ = 3k (since XY : XZ: YZ = 5:3:4).

Using the Pythagorean theorem, we can find the value of k as follows:

XX²+ XZ²= ZZ²

20²+ (4k)²= (5k)²

400 + 16k² = 25k²

9k² = 400

k² = 400/9

k = 20/3

Therefore, XZ = 4k = 80/3 cm.

Hence, the length of XZ is 80/3 cm.

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