Please I really need the help I only have 30 minutes left this is my second attempt at this

Answer:

Density = number of books over volume of box

Step-by-step explanation:

The formula that can be used to calculate the density of books in the box is:

Density = number of books / volume of box

This formula relates the number of books in the box to the volume of the box, and calculates the density of books per unit volume.Therefore, the correct formula to calculate the density of books in the box is the first one given in the options:

Density = number of books over volume of box

Answer:

Density = number of books over volume of box

Step-by-step explanation:

48 is  length of chord AC.

How is a chord defined?

Three or more notes come together to form a chord. A single note, referred to as the root, serves as the foundation for chords. Triads will be covered in this lesson.

                         A root, third, and fifth are used to make them. A line segment connecting two locations on the circle's circumference is what is referred to as the chord of a circle. The diameter, which runs through the centre of the circle, is the lengthiest chord of the circle.

since OD intersects AB to form a right angle at point B, so it bisects the chord AC.

so AB = BC      (1)

given AB = 7x - 4

and CB = 6x  

from (1) we have

7x - 4 = 6x

x = 4

so AB = 7(4) - 4 = 24

CB = 6(4) = 24

length of chord AC = AB + BC = 24 + 24 = 48

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The complete question is -

Segment OD intersects AB to form a right angle at point B.

If AB = 7x - 4 and CB = 6x, what is the length of the chord AC?

Answer:

18. x = 80°

19. y = 85°

Step-by-step explanation:

Opposite angles of an inscribed quadrilateral are supplementary.

18.

x + x + 20 = 180

2x = 160

x = 80

Answer: x = 80°

y + y + 10 = 180

2y = 170

y = 85

Answer: y = 85°

Answer: x = 80°  and  y = 85°

Step-by-step explanation: In a cyclic quadrilateral, opposite angles add up to 180°.

x + (x + 20) = 180  and

y + (y + 10) = 180.

Solving for x

x + (x + 20) = 180

x + x + 20 = 180

2x = 180 - 20

2x = 160

2x/2 = 160/2

x = 80°

Solving for y

y + (y + 10) = 180

y + y + 10 = 180

2y = 180 - 10

2y = 170

2y/2 = 170/2

y = 85°

Answer:

28 the answer is 28 really it's 28

The probability of selecting a person from a population that has a birthday today and another person who has a birthday in April is 1/4380.

What is probability ?

Probability is the branch of mathematics that deals with the study of random events or experiments. It is a measure of the likelihood of an event or outcome occurring. The probability of an event is a number between 0 and 1, where 0 indicates that the event is impossible and 1 indicates that the event is certain to occur. The probability of an event can be calculated by dividing the number of favorable outcomes by the total number of possible outcomes.

According to the question:
To find the probability of selecting a person with a birthday today and another person with a birthday in April, we need to calculate the probability of each event separately and then multiply them together.

Let P(T) be the probability of selecting a person with a birthday today and P(A) be the probability of selecting a person with a birthday in April.

Assuming that there are 365 days in a year and that all birthdays are equally likely to occur, we have:

P(T) = 1/365 (the probability of selecting a person with a birthday today)

P(A) = 1/12 (the probability of selecting a person with a birthday in April)

To find the probability of both events happening together, we multiply the probabilities:

P(T and A) = P(T) x P(A) = (1/365) x (1/12) = 1/4380

Therefore, the probability of selecting a person from a population that has a birthday today and another person who has a birthday in April is 1/4380.

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The best measure of central tendency for this data is the mode, which is the most frequently occurring value in a dataset.

In this case, the grilled ribeye is the most popular selling dinner item with 2,021 portions sold, making it the mode of the data. While the mean and median are also measures of central tendency, they may not be as appropriate for this data since the counts for the grilled ribeye are much higher than the other two items.

Using the mean would give too much weight to the grilled ribeye, and using the median would not accurately represent the most popular item. Therefore, the mode is the best choice for this data.

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The amount of gas Karen has and the amount Karen needed to put into her boat obtained using basic arithmetic operations are;

Basic arithmetic operations include addition, subtraction, division and multiplication operations.

The amount of gas Karen has can be found using basic arithmetic operations as follows;

On Monday, Karen needed to put 5 gallons 3 quarts of gas into her boat. Since 1 gallon is equal to 4 quarts, this is equivalent to (5 × 4 + 3) = 23 quarts of gas

On Saturday, she needed to put twice as much gas into her boat as she did on Monday. So on Saturday she needed to put (2 × 23) = 46 quarts of gas into her boat.

Since, Karen had 18 gallon jug of gas available and 1 gallon is equal to 4 quarts, this mean she had (18 × 4) = 72 quarts of gas available.

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Answer:

Step-by-step explanation:

Answer: 0.0625 g/cm^3

Formula for density: d= mass/volume

we have mass m=50g

volume of rectangular prism = length x height x width

volume of book = 5cm x 16cm x 10cm = 800cm^3

density = mass / volume

density = 50g/800cm^3

density = 0.0625 g/cm^3

The probability that the 100 orders can be filled without reordering components, if the manufacturer stocks 105 components is 1, or 100%.

The probability of being able to fill 100 orders without reordering components depends on the total number of components stocked. If the manufacturer stocks 105 components, then the probability of being able to fill 100 orders without reordering components is 1. Since 105 is greater than or equal to 100, the probability of being able to fill the orders without reordering components is 1 (100%).

Mathematically, this can be expressed as P(Filling 100 orders) = 1, where P stands for probability, and Filling 100 orders stands for the event of being able to fill 100 orders without reordering components.

This is because, if the manufacturer stocks 105 components, then they have enough components to fulfill the 100 orders without reordering components. So, the probability of being able to fulfill the orders without reordering components is 100%, or 1.

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The 2nd term in this given linear sequence {-5, -7, -9, -11, -13}  is -7. So the correct answer is -7.

A linear sequence repeatedly increases or decreases by the same amount. The number added (or subtracted) at each stage of the linear sequence remains the same.

A linear sequence goes from one term to the next by always adding (or subtracting) the same value. The number added (or subtracted) at each stage of the linear sequence is called the common difference.

Examples of linear sequences occur when things change by the same amount each time.

Here is the linear sequence: 8, 11, 14, 17...

To find the next term in this sequence we calculate the common difference.

In this example the common difference is +3.

8 (+3) 11 (+3) 14 (+3) 17 (+3) …

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The sequence follows a pattern of adding 7 to the previous term, and its formula is 7n - 3. The sum of the first 100 terms of the sequence is 35,350, which was found using the formula for the sum of an arithmetic series.

The next term in the sequence can be found by adding 7 to the previous term, so the next term is 25.

To find a formula for the nth term of the sequence, we can observe that each term is 7 more than a multiple of 7. In other words, the nth term is given by the formula 7n - 3.

To find the sum of the first 100 terms of the sequence, we can use the formula for the sum of an arithmetic series:

S = (n/2)(a1 + an)

where S is the sum of the first n terms, a1 is the first term, and an is the nth term. Substituting n = 100, a1 = 4, and an = 703, we get:

S = (100/2)(4 + 703) = 35,350

Therefore, the sum of the first 100 terms of the sequence is 35,350.

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To visually display the trends in net profits over a period of four years, you should use a line chart

Explanation:

A line chart is a type of chart used to show information as a series of data points connected by straight line segments. A line chart is a basic type of chart that is often used in data analysis. It is also known as a line graph or a curve chart. This type of chart is commonly used to display trends in data over time.

                  In the given question, it has been asked to visually display the trends in net profits over a period of four years. To visually display the trends in net profits, a line chart is the best choice. Therefore, the correct answer is option C, a line chart.

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So, Amy ran the 100-yard dash 0.84 seconds faster than Jace.

An equation is a mathematical statement that uses an equal sign to show that two expressions have the same value. It typically consists of variables, constants, and mathematical operations such as addition, subtraction, multiplication, division, and exponentiation. The goal of an equation is to find the value of the variable that makes both sides of the equation equal.

Here,

To find out how much faster Amy ran the race than Jace, we need to calculate the difference in their times.

Amy's time = 12.98 seconds

Jace's time = 13.82 seconds

Difference in time = Amy's time - Jace's time

= 12.98 - 13.82

= -0.84 seconds

The difference is negative, which means that Jace was slower than Amy. To get the positive difference, we can take the absolute value of the difference:

|Difference| = |-0.84| = 0.84 seconds

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The price that maximizes revenue is p=16, and the corresponding quantity sold is q(16) = 64.

To find the price that maximizes revenue, we need to determine the revenue function R(p), which is equal to the product of price p and quantity sold q(p), or R(p)=pq(p). From the problem, we have q(p)=128-4p.

Substituting this into the revenue function, we get [tex]R(p)=p(128-4p)=128p-4p^2.[/tex]

To find the price that maximizes revenue, we need to find the maximum of the quadratic function R(p)=-4p²+128p. We can do this by finding the vertex of the parabola, which occurs at

[tex]p=-\frac{b}{2a}=-\frac{128}{2(-4)}=16[/tex]

Therefore, the price that maximizes revenue is p=16, and the corresponding quantity sold is q(16)=128-4(16)=64.

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Answer:

Step-by-step explanation:

(-+) × (-8) + (-3)³=32

R carries inversely as the cube S . If R=9 when S=3 ,  S= 4, when R= 243÷64.

Inverse proportionality is a mathematical relationship between two variables, in which an increase in one variable leads to a decrease in the other variable in such a way that their product remains constant. In other words, if the value of one variable is multiplied by a certain factor, the value of the other variable will be divided by the same factor.

Mathematically, two variables x and y are said to be inversely proportional if their relationship can be expressed as:

x * y = k

where k is a constant, and the symbol * denotes multiplication.

For example, the distance travelled by a car is inversely proportional to the time taken to travel that distance, assuming the car maintains a constant speed. If we let d represent the distance travelled and t represent the time taken, then we can express their relationship as:

d * t = k

where k is a constant

If R varies inversely as the cube of S, then we know that:

R ∝ [tex]\frac{1}{S^{3} }[/tex]

We can express this relationship using a proportionality constant k:

R = [tex]\frac{k}{S^{3} }[/tex]

To find the value of k, we can use the given information that R = 9 when S = 3:

9 = [tex]\frac{k}{3^{3} }[/tex]

9 = [tex]\frac{k}{27 }[/tex]

k = 9 * 27

k = 243

Now we can use this value of k to find S when R = [tex]\frac{243}{64}[/tex]:

[tex]\frac{243}{64}=\frac{243}{S^{3} }[/tex]

Simplifying this equation, we get:

S³ = [tex]\frac{243*64}{243}[/tex]

S³ = 64

S = ∛64

S = 4

Therefore, when R = [tex]\frac{243}{64}[/tex], S = 4.

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Answer:

x<-8

Step-by-step explanation:

The arrow shows that x must be less than -8. We also know that the circle is not filled in. This means that x must be less than -8 and x≠-8. Hence, x<-8.

A statistic that is used to measure how data is distributed in a population is called a measure of dispersion. This statistic gives context to large datasets by providing an indication of how spread out the data is. This measure of dispersion is important because it helps to identify patterns and trends in the data.

For example, if the measure of dispersion is high, it indicates that the data is spread out and there is significant variation between data points. On the other hand, a low measure of dispersion suggests that the data is clustered together and there is little variation between data points.

This measure of dispersion is used to compare datasets, identify outliers, and make predictions about future trends. Ultimately, the measure of dispersion is an important tool for understanding the context of large datasets.

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Based on this estimate, we can expect the ride to swing approximately 9.2 ft higher after each swing.

An equation is a mathematical statement that asserts the equality of two expressions, often containing variables. It typically consists of two expressions separated by an equal sign. The expressions on either side of the equal sign may contain constants, variables, operators (such as +, -, ×, ÷), and functions. Equations are used in many fields, including mathematics, physics, engineering, and finance, to model and solve problems. They are a fundamental concept in algebra, which is the branch of mathematics that deals with equations and the manipulation of variables.

Here,

Assuming that the ride swings higher by approximately the same amount each time, we can estimate the average increase in height per swing. We can calculate this by dividing the total increase in height from 45 ft to 137 ft (92 ft) by the number of swings it takes to reach that height. Since we don't know how many swings it takes to reach the maximum height, we'll assume that the ride swings 10 times before reaching 137 ft (this is just an estimate).

Total increase in height = 137 ft - 45 ft = 92 ft

Number of swings = 10 (estimated)

Average increase in height per swing = 92 ft / 10 = 9.2 ft

Based on this estimate, we can expect the ride to swing approximately 9.2 ft higher after each swing. Therefore, after the first swing (which reached a height of 45 ft), we can estimate that the ride will swing to a height of approximately 54.2 ft (45 ft + 9.2 ft) on the second swing, and then to a height of approximately 63.4 ft (54.2 ft + 9.2 ft) on the third swing, and so on.

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Complete question:

A thrill ride swings passengers back and forth getting higher and higher each time up to 137ft. suppose the height of the swing after 30sec. is 45ft. How much higher will the fide swing?

The volume of the cone in terms of π is option (c) 100π in^3

The formula for the volume of a cone is given by:

V = (1/3)πr^2h

where r is the radius of the base of the cone, h is the height of the cone.

In this case, we are given that the radius of the cone is 5 in and the slant height is 13 in. We can use the Pythagorean theorem to find the height of the cone:

h^2 = y^2 - r^2

h^2 = 13^2 - 5^2

h^2 = 144

h = 12 in

Therefore, the volume of the cone is:

V = (1/3)πr^2h

V = (1/3)π(5^2)(12)

V = (1/3)π(25)(12)

V = (1/3)(300π)

V = 100π cubic inches

Therefore, the correct option is (c) 100π in^3

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Answer: 100π in3

Step-by-step explanation:

Answer: What grade are you in? Because I had to do this for my 8th or 9th grade year as a homeschooler.... I never had help...I had the same brand laptop and my studies were done on T4L......

Step-by-step explanation:

x2 +3x--3x+5 I think give me a few minutes to check myself

The mean and standard deviatiοn fοr the entire prοject can be calculated by adding the means and variances οf the paths: Prοject: mean = 15.33

Prοbability can be defined as ratiο οf number οf favοurable οutcοmes and tοtal number οutcοmes.

Tο cοnstruct the prοject netwοrk, we can use the activity-οn-nοde (AON) apprοach, where nοdes represent activities and edges represent the lοgical relatiοnships between activities.

Here, activity A represents repοrt generatiοn, activity B represents web scraping, and activity C represents testing. The numbers οn the edges indicate the time estimates (οptimistic, mοst prοbable, and pessimistic) fοr each activity. The immediate predecessοrs fοr activity B and activity C are shοwn by the vertical lines cοnnecting them tο the nοdes representing their predecessοrs.

Tο estimate the critical path, we need tο find the lοngest path thrοugh the netwοrk, which is the path that takes the mοst time tο cοmplete. In this case, the critical path is A-B-C, with a duratiοn οf 8+9+1=18 weeks.

(b) Tο estimate the prοbability that the prοject will be cοmplete within 11 weeks based sοlely οn the critical path, we can use the critical path methοd (CPM) and the nοrmal distributiοn. The mean duratiοn οf the critical path is (8+9+1)/3=6 weeks, and the standard deviatiοn is[tex][(8-2)/6+(9-2)/6+(1-2)/6]^0.5=1.15[/tex]  weeks.

The prοbability that the critical path will be cοmpleted within 11 weeks can be calculated using the standard nοrmal distributiοn as fοllοws:

P(Z <= (11-6)/1.15) = P(Z <= 4.35) = 1

Therefοre, the prοbability estimate is 1 οr 100%.

(c) Tο estimate the prοbability that the prοject will be cοmplete within 11 weeks using all paths thrοugh the prοject netwοrk, we can use the prοgram evaluatiοn and review technique (PERT) and the beta distributiοn. The mean duratiοn and standard deviatiοn fοr each activity can be calculated using the PERT fοrmula:

mean = (οptimistic + 4*mοst prοbable + pessimistic)/6

standard deviatiοn = (pessimistic - οptimistic)/6

The mean and standard deviatiοn fοr each activity are shοwn belοw:

Activity A: mean = (2+8+12)/6 = 7, stdev = (12-2)/6 = 1.67

Activity B: mean = (4+9+11)/6 = 8, stdev = (11-4)/6 = 0.83

Activity C: mean = (1+1+1)/6 = 0.33, stdev = (1-1)/6 = 0

Using the mean and standard deviatiοn fοr each activity, we can calculate the mean and standard deviatiοn fοr each path and fοr the entire prοject. The mean and standard deviatiοn fοr each path are shοwn belοw:

Path 1 (A-B-C): mean = 7+8+0.33 = 15.33, stdev [tex]= (1.67^2+0.83^2+0^2)^0.5 = 1.87[/tex]

Path 2 (A-C): mean = 7+0.33 = 7.33, stdev [tex]= (1.67^2+0^2)^0.5 = 1.67[/tex]

Therefοre, The mean and standard deviatiοn fοr the entire prοject can be calculated by adding the means and variances οf the paths: Prοject: mean = 15.33

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The subtraction property of equality is used for the justification of step 2 in the solution.

The subtraction property of equality states that subtracting the same number from both sides of an equation does not affect the equality.

Therefore, Justify the property used for step 2 in the equality.

1 / 2 r + 1 / 2  = - 2 / 7 r + 6 / 7  - 5

Step 1 : 1 / 2 r + 1 / 2  = - 2 / 7 r - 29 / 7

Step 2: 1 / 2 r = - 2 / 7 r - 65 / 14

We had to subtract 1 / 2 from both sides of the equation to arrive at step 2. Therefore, the subtraction property of equality is the justification for step 2 in the solution.

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Answer:

A) To find the terms of the geometric sequence, we use the formula:

a_n = a_1 * r^(n-1)

where a_n is the nth term of the sequence, a_1 is the first term, r is the common ratio, and n is the position of the term in the sequence.

Given that a_1 = 640 and r = 1/2, we can find the first 6 terms of the sequence:

a_1 = 640

a_2 = a_1 * r = 640 * (1/2) = 320

a_3 = a_2 * r = 320 * (1/2) = 160

a_4 = a_3 * r = 160 * (1/2) = 80

a_5 = a_4 * r = 80 * (1/2) = 40

a_6 = a_5 * r = 40 * (1/2) = 20

So the first 6 terms of the sequence are: 640, 320, 160, 80, 40, 20.

B) To write the terms of the sequence as a series, we simply add the terms together:

640 + 320 + 160 + 80 + 40 + 20 + ...

The series has an infinite number of terms.

C) Here is a graph of the geometric sequence:

   |

640|                    o

   |                o

320|            o

   |        o

160|    o

   |o

  0|___________________

    1   2   3   4   5   6

The horizontal axis represents the position of the term in the sequence (n), and the vertical axis represents the value of the term (a_n). Each dot on the graph represents a term in the sequence.

D) To find the partial sums of the series, we add up the terms up to a certain position in the sequence. For example, the first partial sum is simply the first term:

S_1 = 640

The second partial sum is the sum of the first two terms:

S_2 = 640 + 320 = 960

The third partial sum is the sum of the first three terms:

S_3 = 640 + 320 + 160 = 1120

Continuing this pattern, we can find the first 6 partial sums of the series:

S_1 = 640

S_2 = 960

S_3 = 1120

S_4 = 1200

S_5 = 1240

S_6 = 1260

We can infer that other beings possess consciousness based on their behavior and similarities to ourselves

Consciousness refers to the subjective experience of awareness, self-awareness, and the ability to perceive, reason, and make decisions.

However, the question arises whether animals, plants, or even machines possess consciousness.

To answer this question, we must rely on behavioral, neuroscientific, and philosophical evidence.

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There are no free variables, the vectors are linearly independent.

To either show that the following sets of vectors are linearly independent or find a linear relation between them, we can follow these steps:

. Form a matrix using the given vectors as columns.
. Calculate the determinant of the matrix (if it's a square matrix) or row reduce to echelon form.
. If the determinant is non-zero or the matrix has no free variables, the vectors are linearly independent. If the determinant is zero or the matrix has free variables, the vectors are linearly dependent, and we can find a linear relation.

(a) Create the matrix A using the given vectors:
A = | 1 0 1 |
     | 1 1 0 |
     | 0 1 1 |
The determinant of A is:
det(A) = 1(1(1) - 1(0)) - 0(1(1) - 1(0)) + 1(1(0) - 1(1)) = 1 - 1 = 0
Since the determinant is zero, the vectors are linearly dependent.

(b) Create the matrix B using the given vectors:
B = | 2  0 -1 |
     | 1  1  2 |
     | 0  0  0 |
Row reduce B to echelon form:
B = | 1  1  2 |
     | 0  1 -4 |
     | 0  0  0 |

Since there are no free variables, the vectors are linearly independent.

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There are 72 ways for people to sit around a round table if Pierre and Thomas want to sit together, but Rosa doesn't want to sit next to either of them.

First, we can seat Pierre and Thomas next to each other as a block. There are 2 ways to arrange them (PT or TP).

Next, we can seat Rosa in one of the 6 available seats that are not next to the block. There are 6 ways to do this.

Then, we can seat the remaining 4 people in the 4 available seats. There are 4! ways to do this.

Finally, we need to account for the fact that rotations are not distinct but reflections are distinct. Since there are 8 people seated around the table, there are 8 possible rotations. However, if we reflect the table (i.e., flip it over), we get a different seating arrangement. Therefore, there are 16 distinct arrangements.

Putting it all together, we have:

2 (arrangements for Pierre and Thomas) x 6 (arrangements for Rosa) x 4! (arrangements for the remaining 4 people) x 16 (accounting for distinct reflections) = 72

Therefore, there are 72 ways for people to sit around a round table if Pierre and Thomas want to sit together, but Rosa doesn't want to sit next to either of them.

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Answer:

-6y

Step-by-step explanation:

-5x + 2y + 5x - 8y =

= -5x + 5x + 2y - 8y

= -6y

Answer:

10x-6y

Step-by-step explanation:

5x+5x=10x
and 2y-8y=-6y
Let me know if this helps

The graphic at the end shows the graph of the absolute value function.

How is the function graphed?

The following is the function:

y=−2³√x−1+2

To graph this, we must first identify some points on the line, which requires evaluating the line in a variety of x values.

Replace the value 2 of x in f(x)=-8x-1+2

x is replaced with 2 f(2)=-8+2 f(2)=-6.

Evaluation in x = 3 results in:

y = -8√(3)-1+2

The vertex points (1,2), (2,-6), and (3,-9.31) can be used to graph the square root.

Once you have accumulated enough data points, you may plot them using absolute value functions to create the graph you see below in this case.

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The perimeter of the figure, given the rectangles and the total area, can be found to be 48 inches

The total area is 75 in² which means that the areas of all 5 rectangles add up to 75 in². We can use this to solve for x to be:

5 × ( x × ( x - 2 )) = 75 in²

5 × ( x² - 2x ) = 75 in²

x² - 2x = 15 in²

(x - 5)(x + 3) = 0

x - 5 = 0 or x + 3 = 0

x = 5 or x = -3

Dimensions of a rectangle cannot be negative so x is equal to 5.

The perimeter is then:

= ( x - 2 ) + x + ( x - 2 ) + x + (x - 2 ) + x + ( x - 2 ) + x + (x - 2 ) + x + ( x -2 ) + x

= ( 5 - 2 ) + 5 + ( 5 - 2 ) + 5 + (5 - 2 ) + 5 + ( 5 - 2 ) + 5 + (5 - 2 ) + 5 + ( 5  -2 ) + 5

= 48 inches

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