Posted by Melanie on .
Length of a rectangle is 13 cm less than 5 times it's width. Its area is 28 square cm. Find dimensions of rectangle

A=LxW 
Anonymous,
L = 5W13
LW = 28
(5W13)W = 28
5W^2  13W  28 = 0
(5W+7)(W4) = 0
so, W=4
L = 5*413 = 7