Question

Find the value of x.

A.20

B.25

C.18.75

D.22.5

Answer 1

B. 25

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i hate myself :/

Answer 2

The two equations are vertical angle, which would be equal to each other.

Set the equations to equal and solve for x:

5x -10 = 3x +40

Subtract 3x from both sides:

2x -10 = 40

Add 10 to both sides:

2x = 50

Divide both sides by 2:

x = 50 / 2

x = 25

The answer is B. 25