Question

Find the value of x
A.)20
B.)55
C.)70
D.)38

Answer 1

A.) 20

Explanation:

These angles are complementary meaning they add up to 90°.

4x - 10 + x = 90

5x - 10 = 90

5x = 100

x = 20

Answer 2

Hello! answer: x = 20

Explanation:

This is a complementary angle meaning it will add up to 90 degrees so...

20 × 4 = 80 80 - 10 = 70

70 + 20 = 90 therefore x = 20