Answer:
7
Step-by-step explanation:
12 x 12 = 144
144 divided by 20 = 7.2 but round it and get 7
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(<em><u>not 100% sure it's correct)</u></em>
160/4=40 so each side is 40. Divide the perimeter by how many sides you have.
Answer:
275
Step-by-step explanation:
1000-725=275
<h3><u>The unknown number is equal to 4.</u></h3>
8x - 27 = 5
Add 27 to both sides.
8x = 32
Divide both sides by 8
x = 4