math 121
posted by TIM .
a window is shaped like a rectangle whose perimeter is 270 in. the length is 8 times as long as the width. find the length and width

What is the formula for calculating the perimeter of a rectangle?

is it l x width ?

No. Check your text book.

wuould i add the numbers toegther?

how would i do it then?

What is the formula for perimeter given in your text book?

p = 270 +270+270+270 ?

No.

how should i slove it ?

You can't solve it until you know how to find the perimeter of a rectangle.
http://www.mathopenref.com/rectangleperimeter.html 
so i add 270 +270+8?