77-27= 50 so when you add both it add up to 77 ,
50 is the answer
Yes due to the fact that additive inverse is the oppsite. so she runs up +4 and runs down -4.
7. Alternate interior
8. Congruent
9. Work:
6x - 16 = 2x + 40
4x = 56
x = 14
My reasonable estimate might be about 2 1/2 feet. I know that because taking three rulers up to your bedroom or a normal room and get about 2 or 2 1/2 feet