Select the correct difference. 5d² + 4d - 3 less 3d² -2d + 4

Which expression is equivalent to7_/x^2 ÷ 5_/y^3? assume y# 0

For problems 29 - 31 the graph of a quadratic function y=ax^2 + bx + c is shown. tell whether the discriminant of ax^2 + bx + c = 0 is positive, negative, or zero.

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?