Question

Please help me with this

Answer 1

x = 5

m∡B = 66°

Explanation:

these two angles are same-side interior angles, which are supplementary

8x + 74 + 2x + 56 = 180

10x + 130 = 180

10x = 50

x = 5

m∡B = 2(5) + 56 = 66°