Question

Solve for x.
3.rº
80°
20°
A. 10
B. 20
C. 50
D. 80

Answer 1

x = 20°

Explanation:

The angle measures should add up to 180 degrees. So that leaves us with 100 degrees left to find if we take out the 80 given.

3x + 2x simplifies to 5x. 5x must equal 100.

100/5 = 20.

Therefore x = 20.