Posted by shaniqua on Tuesday, October 12, 2010 at 5:21pm.
A rectangle has a perimeter of 12x + 20 and a width of 2x + 8. What is the length of the rectangle?

algebra 1  Reiny, Tuesday, October 12, 2010 at 5:48pm
let the length be l
2l + 2(2x+8) = 12x+20
2l = 8x + 4
l = 4x + 2

algebra 1  shaniqua, Tuesday, October 12, 2010 at 6:09pm
how did you get right to.... 2l= 8x + 4 ?

algebra 1  Reiny, Tuesday, October 12, 2010 at 6:13pm
I skipped what I thought was an easy simplification ...
2l + 2(2x+8) = 12x+20
2l + 4x + 16 = 12x + 20
2l = 12x + 20  4x  16
2l = 8x + 4
Answer This Question
Related Questions
 Algebra  Please help me with this Algebra problem: The length of a rectangle is...
 basic geometry  A rectangle has width the same asa a side of a square whose ...
 basic geometric  10. a rectangle has width the same as a side of a square whose...
 maths  the length of a rectangle is 3 less than 5 times its width. Write a ...
 math  the length of a rectangle is 5 ft more than twice the width. a)if x ...
 algebra  Perimeter of a rectangle. The width of a rectangle is three fourths of...
 College Algebra  Suppose that the length of a rectangle is 3 inches longer than...
 Algebra 1  The perimeter of a rectangle equals the sum of the lengths of its ...
 Algebra 1  Okay one last one that I've spent all night truing to figue out. 2. ...
 math  Suppose that the width of a rectangle is 5 inches shorter than the length...
More Related Questions