18 – x = 12

Please help ma

When solving this problem: 3025/5.5 = a/90.75 you get 49912.5 which would be the length of one of the sides of a square when the area is only 90.75 inches. is that answer correct, why, and how is it possible?

Sections of prefabricated woods are each 5 1/3 feet long, how long are 7 1/2 sections placed end to end?

Type the next three numbers in a sequence 80, 90, 85, 95, 90, 100, 95, 105