Solve the problem using the elimination method.
-Two angles are supplementary, and one is 40° more than three times the other. Find the smaller angle.
A) 145°
B) 105°
C) 75°
D) 35°

Question

Quizplus · Accepted Answer

The two angles are supplementary, so their sum is 180°. Let x be the smaller angle, then the other angle is 3x + 40. The equation is x + 3x + 40 = 180. Solving for x gives x = 35°, which is the smaller angle.

Solve the Problem Using the Elimination Method