Question

Please Help ASAP!

Find the value of x (5x+13) (3x+7)
A. 10
B. 15
C. 20
D. 25

Answer 1

C. 20

Explanation:

The two bottom inside angles are identical.

This means that 5x +13 and 3x+7 need to equal 180 degrees.

5x +13 + 3x +7 = 180

Combine like terms:

8x +20 = 180

Subtract 20 from each side:

8x = 160

Divide both sides by 8:

X = 160 / 8

X = 20