Answer:

Step-by-step explanation:
Multiply the fraction by the conjugate and solve (would explain more but you're on a time crunch)
Answer:
can you take a picture of your problem
13. 79
14. 79
15. 101
16. 101
17. alternate interior angles
18. alternate exterior angles
19. vertical angles
20. corresponding angles
They are telling you to make inches into feet
I foot equals 12 inches
84 divided by 12 equals 7
Answer is seven