Answer:
112
Explanation:
Supplementary angles means that angle A and angle B added together equal 180˚. This mean we can re-write the angle measures into an algebra problem
A(3x+16) + B(2x + 4 ) = 180
Or
5x + 20 = 180
5x + 20 - 20 = 180 - 20
5x = 160
5x/5 = 160/5
x = 32
Now that we know that X = 32, we can plug 32 into the measure of angle A.
A(3x+16)
A(3(32)+16)
A(96+16)
A(112)
Angle A equals 112˚ and Angle B equals 68˚.