Find the area of the
regular figure below:

A) 645.4 m2
B) 571.3 m2
C) 624.7 m2
D) 590.2 m2
E) 613.9 m2

explain pls

Find The Area Of Theregular Figure Below:A) 645.4 M2B) 571.3 M2C) 624.7 M2D) 590.2 M2E) 613.9 M2explain

Answers

Answer 1

Answer:

E) 613.9 m2

Step-by-step explanation:

sum of measures of interior angles of a polygon of n sides:

(n - 2)180

For a pentagon:

(5 - 2)180 = 3(180) = 540

measure of one interior angle of a regular pentagon:

540/5 = 108

Draw a segment from the center of the pentagon to the top vertex. Now you have a right triangle.

The triangle has a 90 deg angle where the segment in the figure meets the side of the pentagon. Let half of the side of the pentagon be x. x is a side of the right triangle.

For the 54 deg angle in the triangle, 13 m is the opposite leg, and x is the adjacent leg.

tan A = opp/adj

tan 54 = 13/x

x = 13 m/tan 54 = 9.445 m

x is half of the side of the pentagon.

2x is the side of the pentagon.

2x = 2(9.445 m) = 18.89 m

The given 13 m segment is the apothem of the pentagon.

A = nsa/2

where n = number of sides, s = length of 1 side, a = length of apothem

A = (5)(18.89 m)(13 m)/2

A = 613.9 m^2

Answer: E) 613.9 m2


Related Questions

12 n - 49, when n = 3

Answers

Answer:

-13

Step-by-step explanation:

First subsitute 3 for n

12(3)-49 multiply 3 with 12

26-49 subtract

-13

12 x 3 - 49= -13
12x3=36
36-49=-13

help?!?
i need this by this afternoon.

Answers

Answer:

-25 3/8

Step-by-step explanation:

Answer:

32 5/8

Step-by-step explanation:

-71/4x(-4) +35/8

-29/4x(-4)+35/8

29+3 5/8

32 5/8 261/8 32.625 are alterniate forms

A salesperson earns a 12.5% commission on every car sold. The salesperson sold a car for $17,500. What is the commission earned from the sale? Round your answer to the nearest cent.

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A n s w e r:

$2187.50

Which is a root of the equation x2 + 6x + 8 = 0?

Answers

Answer:

4 and 2

Step-by-step explanation:

complete it (picture)​

Answers

2+(-2)=0
11+(-11)=0
-7+7=0
-3+3=0

And the additive inverse of (-1) is 1

Simplify: 4(36)?????

Answers

Answer:

To reduce this fraction, simply divide the numerator and denominator by 4 (the GCF). So, 436 = 4÷436÷4 = 19. Thus, 436 is equivalent to 19 in the reduced form.

Step-by-step explanation:

The solution for the expression 4(36) after you simplify can be expressed as 144.

What is 4(36) when you simplify?

To simplify the expression 4(36), we need to perform the multiplication operation.

4 multiplied by 36 can be calculated as follows:

4 x 6 = 24 (multiplying the units digit)

4 x 30 = 120 (multiplying the tens digit)

Now, we add the results together:

24 + 120 = 144

Therefore, the number 4 multiplied by the number 36in brackets is equals to 144.

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work out a & e
will mark brainlest

Answers

Answer:

a = 14

b = 15

c = 15

d = 18

e = 18

Step-by-step explanation:

The stratified sampling works as follows:

stratified sampling = (Population of subgroups)*(total sample size)/(entire population)

in this case, sample size = 80

entire population = 140 + 150 + 150 + 180 + 180 = 800

Population sample is the number of students of each year (for year 7, the population of subgroup is 140, and so on)

whith this equation we can find all the missing values:

a = (140)*(80/800) = 14

b = (150)*(80/800) = 15

c = (150)*(80/800) = 15

d = (180)*(80/800) = 18

e = (180)*(80/800) = 18

The panthers lost 6 yards on their first play and lost another 8 yards on their next play. What was their net result in yards after these two plays?

Answers

 my badd i didnt read the whole question it would be negative 14

can anyone help me in this ???? and tysm !!!

Answers

Answer:

The answer to the question provided is 38.

The answer is B. 38 hope this helps

The temperature on a Monday evening was 8 °F. Tuesday evening it was
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Answers

Answer:

it would be -4 Degrees F

Step-by-step explanation:

8 -12 = -4

alice ran 8 miles over the weekend . how many kilometers did she run? 1 mile = 1.6 kilometers​

Answers

The answer it 12.8 kilometers I believe

If Karen finished watching a movie at 1:10 pm, and it lasted 1 hour 38 minutes, then what time did she start the movie

Answers

Answer:

11.32pm

Step-by-step explanation:

1.10pm - 1hr = 12.10pm

12.10pm - 38min = 11.32pm

Answer:

1:38 minus and hour which is 12:38now minus 38 minutes from an hour is 22 so the answer is 12:22

c) Which expressions show the amount of
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Choose ALL that apply.
40 = 2
40 = 40
40 + 40
40. 2
40 2

Answers

Answer: 40 . 2 and 40 + 40

Step-by-step explanation:

The expression which shows the saving is 40 + 40 and 40 x 2. The correct options are C and D.

What is an expression?

The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.

Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.

Given that the amount of money saved by Erica is $40. The expression which represents the savings will be,

40 + 40 = 80

40 x 2 = 80

Therefore, the expression which shows the saving is 40 + 40 and 40 x 2. The correct options are C and D.

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A restaurant is offering a dinner special that includes one starter and one entree. The choices are listed below.

Starter: breadsticks, soup, salad
Entree: beef, fish, chicken, shrimp, pork

How many possible dinner special combinations are there?
5
8
10
15

Answers

Answer: i think that the answer is 10

plz give me some points

Step-by-step explanation:

Answer:

15

Step-by-step explanation:

:)

What is the value of the expression?
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Answers

Answer:    

LETTER B

Step-by-step explanation:

8.5 - 2 + 4.75 =

6.5 + 4.75 =

11.25 or 11 1/4

how do i find the missing value of “?”

Answers

Add the 3 numbers that you know.
Multiply the mean of 73 by 5 (numbers you have).
Add the numbers you are given.
Subtract the sum you have from the total sum to find your missing number.

How to solve 2 (3x + 2) = 22

Answers

Answer:

x = 3

Step-by-step explanation:

[tex]2(3x+2)=22\\\\6x+4=22\\\\6x+4-4=22-4\\\\6x=18\\\\\frac{6x=18}{6}\\\\\boxed{x=3}[/tex]

Hope this helps.

Pythagorean theory 4n2 +2=22

Answers

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Answer:

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Step-by-step explanation:

because the little square in the corner

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Step-by-step explanation:

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Answers

18 CDs are of another genre

Spend $1.85 & pay with a
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Answers

Maybe ..................

3. Marjorie made 4 wreaths in 6
hours and 6 wreaths in 9 hours.
What is the constant of
proportionality?
13
k=2
k = 2/3
k = 3/2
k= 3

Answers

Answer:

The constant of proportionality is k = [tex]\frac{2}{3}[/tex] ⇒ B

Step-by-step explanation:

The form of the equation of the proportionality is y = k x, where

k is the constant of proportionality

∵ Marjorie made 4 wreaths in 6 hours

→ Let y the number of wreath and x is the time of making them

y = k x

y = 4 and x = 6

→ Substitute them in the equation

4 = k(6)

∴ 4 = 6k

→ Divide both sides by 6 to find k

∵ [tex]\frac{4}{6}[/tex] = [tex]\frac{6k}{6}[/tex]

[tex]\frac{2}{3}[/tex] = k

Let us use the other information to be sure it will give us the same value of k

∵ She made 6 wreaths in 9 hours

y = 6 and x = 9

→ Substitute them in the equation

6 = k(9)

∴ 6 = 9k

→ Divide both sides by 9 to find k

∵ [tex]\frac{6}{9}[/tex] = [tex]\frac{9k}{9}[/tex]

[tex]\frac{2}{3}[/tex] = k

The constant of proportionality is k = [tex]\frac{2}{3}[/tex]

Mr. Kilborn's class has ten girls and ten boys. If one student is
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Answers

Answer:

50%

Step-by-step explanation:

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Answers

Answer:

x=3

Step-by-step explanation:

move the constant to the right hand side and change

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x=3 Divide by 4

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Answers

Answer:

The answer is A

Step-by-step explanation:

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Answers

Answer:

y=0.5x+8

Step-by-step explanation:

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help me and when you are done
have a blessed day god blesses you

Answers

Answer:

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Step-by-step explanation:

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Which expression is equivalent to
1
?
64
0 41 x 4-10
O 4-1 x 410
O 4
x 47
O 44 x 4-7

Answers

Answer:

D. 4^4 x 4^-7

Step-by-step explanation:

Option D is correct,  4⁴×4⁻⁷ is equivalent to the expression 1/64

What is Expression?

An expression is combination of variables, numbers and operators.

The given expression is 1/64

One divided by sixty four

We need to find the expression which is equivalent to One divided by sixty four.

We know that 4×4×4 is 64

Which means 4³=64

4⁴×4⁻⁷ = 4⁻³

1/64 = 1/4³

= 4⁻³

So 4⁴×4⁻⁷  is equal to 1/64

Hence, Option D is correct,  4⁴×4⁻⁷ is equivalent to the expression 1/64

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Mary has 200ml of hand sanitizer that is 15% alcohol she mixes it with 200ml of a hand sanitizer that is x% alcohol how many ml is in the second hand sanitizer?

Answers

400 is the correct answe

Answer:

2x

Step-by-step explanation:

ok so basically..

x/100 * 200

200x/100

then you cross out the zeros and you get 2x.

Hope this Helped!! XD

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