Mathematicsplease help quick!!
posted by Scraffii .
If 16x+8y represents the perimeter of a rectangle, and 5x2y reprents its width, then what is expression of lenght?

Perimeter = 2(Length + Width),so
length = (perimeter)/2  Width
=(16x+8y)/2  (5x2y)
=8x+4y  (5x2y)
= 3x+6y