SOLUTION: the length of a rectangle is 2 centimeters less than 3 times its width. its area is 21 square centimeters find the dimensions of the rectangle
Algebra.Com
Question 362311: the length of a rectangle is 2 centimeters less than 3 times its width. its area is 21 square centimeters find the dimensions of the rectangle
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
the length of a rectangle is 2 centimeters less than 3 times its width. its area is 21 square centimeters find the dimensions of the rectangle
..
width =w
length = 3w-2
...
L*W= Area
w(3w-2)=21
3w^2-2w=21
3w^2-2w-21=0
3w^2-9w+7w-21=0
3w(w-3)+7(w-3)=0
(w-3)(3w+7)=0
..
w=3 cm the width
length = 3w-2
Length =7 cm
...
m.ananth@hotmail.ca
RELATED QUESTIONS
the length of a rectangle is 11 centimeters less than six times its width. Its area is 21 (answered by mananth,nerdybill)
The length of a rectangle is 7 centimeters less than four times its width. Its area is 15 (answered by JBarnum)
The length of a rectangle is 2 centimeters less than three times its width.If the area is (answered by checkley71)
The length of a rectangle is 13 centimeters less than three times its width. Its area is... (answered by ewatrrr)
The length of a rectangle is 11 centimeters less than three times its width. Its area is (answered by JulietG)
The length of a rectangle is 17 centimeters less than six times its width. Its area is 28 (answered by ewatrrr)
The length of a rectangle is 8 centimeters less than three times its width. Its area is... (answered by josgarithmetic,ikleyn)
The length of a rectangle is 13 centimeters less than four times its width. Its area is... (answered by addingup,MathTherapy)
The length of a rectangle is 23 centimeters less than six times its width. Its area is... (answered by Boreal)