Angle f and angle h are supplementary angles.

Question

* The measure of angle f is 77 degrees
* the measure of angle h is (5x + 18) degrees
Which equation can be used to find the value of x?
A. 77 = 5x + 18
B. 77 + (5x + 18) = 180
C. 77 + (5x + 18) = 90
D. 77 + (5x + 18) = 360

Answer 1

Supplementary angles are two angles that add up to 180 degrees. Given that the measure of angle f is 77 degrees and the measure of angle h is (5x + 18) degrees, you can set up the equation as follows:

77 + (5x + 18) = 180

So the correct choice is:

B. 77 + (5x + 18) = 180