In the figure below, m∠1 = x and m∠2 = x - 8. Which statement could be used to prove that x = 49?

Answer:
see explanation
Step-by-step explanation:
∠ 1 + ∠ 2 = 90, that is
x + x - 8 = 90
2x - 8 = 90 ( add 8 to both sides )
2x = 98 ( divide both sides by 2 )
x = 49