SOLUTION: What are the dimensions of a rectangle if the length is 7 less than twice the width and the area is 30?

Algebra.Com
Question 601683: What are the dimensions of a rectangle if the length is 7 less than twice the width and the area is 30?
Answer by flame8855(424)   (Show Source): You can put this solution on YOUR website!
let x be the length
let y be the width
x=2y-7
xy=30
(2y-7)y= 30
2y^2 -7y=30
y= -2.5, y =6
so y = 6
x= 5

RELATED QUESTIONS

What are the dimensions of a rectangle if the length is 7 less than twice the width and... (answered by Alan3354)
The width of a rectangle is 15 less than twice its length. If the perimeter of the... (answered by MathLover1,josgarithmetic,MathTherapy)
The area of a rectangle is 52 and the length is 5 less than twice the width. What are the (answered by Alan3354)
the length of a rectangle is 6 cm less than twice its width. the perimeter of the... (answered by lwsshak3)
The width of a rectangle is 5 less than its length. If the perimeter is 30, what are the (answered by josgarithmetic)
the length of a rectangle is 7 cm less than twice its width. the perimeter of the... (answered by richard1234)
The length of a rectangle is 7 centimeters less than its width. What are the dimensions... (answered by jorel1380)
The length of a rectangle is 1 cm less than twice the width. The area is 45cm^2. what are (answered by josgarithmetic,MathTherapy)
The length of a rectangle is 9 cm less than twice its width. If the area of the rectangle (answered by ewatrrr)