Angle 1 and 2 are complimentary.

1 = x

2 = (3x+30)

what is the value of x?

A. 15

B. 25

C. 30

D. 40

E. 55

x = 15

Step-by-step explanation:

If angles are complimentary, they add up to 90 degrees

Step 1: Make an equation

x + (3x + 30) = 90

Step 2: Solve for x

x + (3x + 30) = 90

x + 3x + 30 = 90

4x + 30 - 30 = 90 - 30

4x / 4 = 60 / 4

x = 15

Answer: x = 15

A. 15

Step-by-step explanation:

Complementary angles add to 90 degrees

<1 + <2 = 90

x + 3x+30 = 90

Combine like terms

4x + 30 = 90

Subtract 30 from each side

4x+30-30 = 90-30

4x = 60

Divide by 4

4x/4 = 60/4

x = 15