Question

If < A and < B are complementary, and < A = 3x + 4 degrees, while < B = 6x - 4 degrees, find x.

Select one:
a. 10
b. 4
c. 9
d. 21

Answer 1

a

Explanation:

complementary angles sum to 90° , so

3x + 4 + 6x - 4 = 90

9x = 90 ( divide both sides by 9 )

x = 10