Question

The measure of two angles is (‒4 ‒ 0.2x +11)° and (0.8x +10)°.

What is the value of x if these angles are congruent?

Answer 1

x = - 3

Explanation:

given the 2 angles are congruent ( equal ) , then equate them and solve for x

- 4 - 0.2x + 11 = 0.8x + 10 ( simplify left side )

- 0.2x + 7 = 0.8x + 10 ( add 0.2x to both sides )

7 = x + 10 ( subtract 10 from both sides )

- 3 = x