Question

Find the value of x.
A) 71
B) 72
C) 73
D) 75

Answer 1

C) 73

Explanation:

The angles that measure 146° and (-39 + x)° are considered to be supplementary angles. A supplementary angle is when two angles sum up to equal 180°. We can create an equation with what we know;

146 + (-39 + x) = 180

~Remove parenthesis

146 - 39 + x = 180

~Combine like terms

107 + x = 180

~Subtract 107 to both sides

x = 73

Best of Luck!