The midpoint would be -8 because it is 2 away from both ends.
You need to set this up with a proportion and solve. 18/x-5 = 13.5/12.
cross multiply 13.5x-67.5=216
now solve for x
13.5x=283.5
x=21
the missing side is equal to 21-5, which is equal to16
25 * 5 = 25 + 25 + 25 + 25 + 25 = 175
Answer:
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Step-by-step explanation:
