Solve by substitution 2x+4y= -2 and y= 4x -5

Acity plans to build a new rectangular-shaped park. the perimeter of the park will be 940 meters. the width of the park will be 300 meters. what will be the length, in meters, of the new park?

Which is the length of the hypotenuse of the triangle a. 94ft b. 214 ft c. 33ft d. 37 ft

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