Raymond B. answered 09/01/20
Tutor
5
(2)
Math, microeconomics or criminal justice
Let A and B be the two supplementary angles
A+B=180
A=31+B
31+B+B = 180
2B=180-31 = 149
B = 149/2 = 74.5 degrees
A = 180-74.5 = 105.5 degrees