Answer:
Step-by-step explanation:
If ∠A=8x+14 and ∠B=2x+50 are supplementary, then the sum of both angles is 180.
∠A + ∠B = 180
8x+14 + 2x+50 = 180
10x + 64 = 180
10x = 180-64
10x = 116
x = 11.6
To get m∠B, substitute x = 11.6 into m∠B = 2x+50
m∠B = 2(11.6)+50
m∠B = 23.2+50
m∠B = 73.2°
