Use scientific notation to find the product of 7.13x10^_3 and 40.

Find the sum of 4x^{2} -4+6 and -7^{2} +3x+1

Aconstruction worker has rope 9 m long he needs to cut it in pieces that are each 3 /5 m long how many such pieces can he cut without having any rope leftover?

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?