Answer:
A: 150°
B: 30°
Step-by-step explanation:
You want the measures of supplementary angles A and B such that their measures have the ratio A:B = 5:1.
Supplementary angles total 180°. The measure of angle B is 1/(5+1) = 1/6 of the total, or 180°/6 = 30°. Angle A is 5 times that.
A = 150°
B = 30°
