If I am not mistaken, you cross multiply then divide.
Answer:
28
Step-by-step explanation:
find perimeter (25 + 25 + 45 + 45 = 140)
divide your perimeter by 5 (140 ÷ 5 = 28)
therefore you need 28 fence posts
22
bc I know that is 22 so just put that
Answer:
42 7/8
Step-by-step explanation:
7(6 1/8)
~Turn the 7 into a fraction and the other fraction into an improper one
7/1 * 49/8
~Multiply
343/8
~Simplify
42 7/8