Question

Find the value of x

a. 4
b. 9
c. 18
d. 14

Answer 1

4

Explanation:

We know that this is a supplementary angle, which means the sum of two angles is 180 degrees.

The Equation would then be:

140+10x=180

All you need to do is solve for x.

140+10x=180

-140 -140 (Subtract 140 from both sides)

10x=40 (Divide by 10)

x=4

Answer 2

A. 4
The degree has to equal 180 so 180-140=40 40=(10)(4)