Question

In a geometric diagram, A and B are complementary, and they form a straight line with C. If m A = x°, m B = (2x)°, and m C = 90°, what is the measure of B?

A. 180°
B. 30°
C. 90°
D. 60°

Answer 1

[AI-generated answer — Bot GPT 3.5]

Since A and B are complementary, their measures add up to 90°. So we have x° + 2x° = 90°. Combining like terms, we get 3x° = 90°. Dividing both sides by 3°, we get x = 30°. Therefore, the measure of B is 2x° = 2(30°) = 60°. The answer is D.