SOLUTION: The length of a rectangle is six inches less than three times the width.The perimeter of the rectangle is 36 inches.What are the width and length of the rectangle? PLE

Algebra ->  Rectangles -> SOLUTION: The length of a rectangle is six inches less than three times the width.The perimeter of the rectangle is 36 inches.What are the width and length of the rectangle? PLE      Log On


   

Question 167268: The length of a rectangle is six inches less than three times the width.The perimeter of the rectangle is 36 inches.What are the width and length of the rectangle?





PLEASE SHOW YOUR WORK.tHIS IS A TEST IN MY GEOMETRY CLASS THAT HE LET US TAKE HOME.
Answer by Mathtut(3670) About Me  (Show Source):
You can put this solution on YOUR website!
p=2(l+w) where p is the perimeter, l=length,and w=width
l=3w-6 so plugging in the know values 36=2%28%283w-6%29%2Bw%29
:
36=8w-12 8w=48 highlight%28w=6%29width
so length equals highlight%283%286%29-6=12%29length