For two adjacent angles with measures x° and (x + 30)° that make up a 90° angle, what is x?

Question

A.15

B.30

C.20

D.60

Answer 1

To find the value of x, we can set up the equation:

x + (x + 30) = 90

Combining like terms:

2x + 30 = 90

Subtracting 30 from both sides:

2x = 60

Dividing both sides by 2:

x = 30

Therefore, the value of x is 30°.

The answer is B. 30