Question

11)

Consider the diagram of supplementary angles.
128
5xº
What is the value of x?
A. 10.4
B. 52
C. 61.6
D. 92

Answer 1

A. 10.4

Explanation:

Supplementary means to add to 180. Take 128 from 180 (180-128) and you get 52. 52/5= 10.4. To check this work you can solve it with the value plugged into the equation. 128 + 10.4(5) = 180, therefore 10.4 is the correct answer.