Posted by Kate on Saturday, July 17, 2010 at 11:29am.
how do I find the length and width of a rectangle when the width of the rectangle is 3 feet less tahn the length. The area is 18ft^2

Algebra 2  drwls, Saturday, July 17, 2010 at 12:23pm
Here is how to get the answer using algebra.
L*W = L*(L3) = 18
L^2 3L 18 = 0
(L+3)(L6) = 0
L = 6 or 3
Take the positive root for L. A negative length does not make sense in this case.
Then compute W.

Algebra 2  amy, Thursday, August 25, 2011 at 8:37pm
what is an expression for an area of an equilateral triangle,A, as a function of its diameter,d?
Answer This Question
Related Questions
 basic geometric  10. a rectangle has width the same as a side of a square whose...
 math  The length, l, of a rectangle is 2 feet less than three times the width, ...
 math  I can't seem to figure this out. It is for my study guide. Please help. ...
 coordinate algebra  The area of a rectangle is found by multiplying the length ...
 Algebra/geometry  a rectangle has a width of 4 cm less than it's length. if a ...
 Algebra Homework, HELP!  1) A rectangle has an area of 297 square inches and a...
 algebra  The length of a rectangle is 3 feet less than twice the width of the ...
 Algebra  The length of a rectangle is 3 feet less than twice the width of the ...
 algebra , help  Can someone help me set up the equations thanks. Directions: ...
 basic geometry  A rectangle has width the same asa a side of a square whose ...
More Related Questions