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musickatia [10]
3 years ago
10

A regular pentagon is shown.

Mathematics
2 answers:
loris [4]3 years ago
5 0

Answer:

C: 12.36 cm

Step-by-step explanation:

11Alexandr11 [23.1K]3 years ago
3 0

Answer:

The measure of radius c is 12.36 cm

C is correct.

Step-by-step explanation:

Given: A regular pentagon is shown in diagram.

As we know the sum of angle of pentagon is 540°

It is a regular pentagon. Therefore, each angle is equal.

OB would be angle bisector of angle B

Thus,

In triangle OBC, ∠C=90°

Hence, The measure of radius c is 12.36 cm

Read more on Brainly.com - brainly.com/question/3553861#readmore

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The figures are similar. The area of one figure is given. Find the area of the other figure to the nearest whole number.
Akimi4 [234]

Answer:  Option b.

Step-by-step explanation:

First, you need to calculate the ratio of the area. This is:

ratio=(\frac{64}{28})^2\\\\ratio=\frac{256}{49}

You know that the area of the smaller trapezoid is 771 m², then you can set up the following proportion, where "x" is the area of the larger trapezoid. Then you have:

\frac{256}{49}=\frac{x}{771}

Now you must solve for "x". Therefore, you get that the area of the larger trapezoid is:

 x=(771)(\frac{256}{49})\\\\x=4,028m^2

3 0
3 years ago
There are 22 animals in the barn. Some are geese and some are goats. There are 82 legs in all. How many of each animal are there
Free_Kalibri [48]

Let the number of geese be x.

Then number of goats is 22-x.

A goose has 2 legs, and a goat has 4.

There are a total of 82 legs.

So,

2x + 4(22-x) = 82

2x + 88 - 4x = 82

-2x = -6

x = 3

There are 3 geese and (22-3=) 19 goats.

Please mark Brainliest if this helps and feel free to ask doubts!

7 0
3 years ago
Solve the system of linear equations by elimination.<br> -3.x – 5y = -7<br> -4x + 5y = 14
julia-pushkina [17]

Answer:

(- 1, 2 )

Step-by-step explanation:

Given the 2 equations

- 3x - 5y = - 7 → (1)

- 4x + 5y = 14 → (2)

Add the 2 equations term by term to eliminate y , that is

- 7x + 0 = 7

- 7x = 7 ( divide both sides by - 7 )

x = - 1

Substitute x = - 1 into either of the 2 equations and solve for y

Substituting into (1)

- 3(- 1) - 5y = - 7

3 - 5y = - 7 ( subtract 3 from both sides )

- 5y = - 10 ( divide both sides by - 5 )

y = 2

solution is (- 1, 2 )

8 0
3 years ago
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Line segment t and line segment r are parallel. Both line segments are reflected across the y-axis to form line segments t' and
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Answer:/

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Step-by-step explanation:

           

3 0
3 years ago
Factor 9(n − 4) − 4n(n − 4)
schepotkina [342]
Hey there :)

9( n - 4 ) - 4n ( n - 4 )
We can take ( n - 4 ) as common as both are getting multiplied by ( n - 4 )

We can join 9 - 4n together

Therefore, the final answer will be ( n - 4 )( 9 - 4n )
4 0
3 years ago
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