Answer:
x=63
Step-by-step explanation:
The two interior angles add up the the exterior angle, so 51+x+12=2x. From there, solve to get x=63. Hope this helped!
-78
Step-by-step explanation:
(7-8)(78)
(-1)(78)=-78
Answer:
you balance your stretching
Step-by-step explanation:
Set up a proportion.
x = length of actual wall
1/30=7/x
Cross multiply: x = 210 inches