Question

Solve for x

A.30

B.45

C.60

D.90​

Answer 1

Answer: A

Angle C is 90 degrees. And the overall degree of this triangle should be 180 degrees. With simple algebra the equation is 180= 90 + 2x + x
Add like terms 180=90+3x
Subtract 90 on both sides. 90= 3x
Divide 90 by 3 and x=30

Answer 2

2x+x+90 = 180

3x = 180-90

3x = 90

x=30