C). In step 2, he needed to divide both sides of the equation by 5.
Answer:
The angles are supplementary to each other (their sum is 180 degrees)
x = 62°
Step-by-step explanation:
(2x+10) + 46 = 180
subtract 56 from each side
2x = 124
divide both sides by 2
x = 62°
Seven divided by eight is 0.88 or 0.875