math
posted by LP .
Find the dimensions of a rectangle having an area of 10 square centimeters and whose width is 3 centimeters less that its length.

Let x = length, then width = x3.
Area = Length * Width
10 = x(x3) = x^2  3x
x^2 3x 10 = 0
(x5)(x+2) = 0
Take it from here.
Respond to this Question
Similar Questions

7th grade mathSuppose
Suppose rectangles X and Y are similar. The dimensions of rectangle X are 5 centimeters by 7 centimeters. The area of rectangle Y is 140 square centimeters. What are the dimensions of rectangle Y? 
math
if the area of a rectangle is 30 square centimeters and the length is 6 centimeters,use the equation 30=6w to find the width w of the rectangle.I don't understand what would be the correct answer I think my aswer doesn't look correct. 
math
A manufacturer sells widgets, each of which is packaged in a box whose dimensions are 8 centimeters by 8 centimeters by 8 centimeters. Design the dimensions of a box to ship widgets. Your box must hold at least 1000 widgets. (Enter … 
MATH
A RECTANGLE HAS A WIDTH OF X CENTIMETERS AND A PERIMETER OF 8X CENTIMETERS. A SQUARE HAS SIDES OF LENGTH 1/4 THAT OF THE RECTANGLE A) FIND THE LENGTH OF THE RECTANGLE B) FIND THE PERIMETER OF THE SQUARE C) FIND HOW MANY CCENTIMETERS … 
math
A RECTANGLE HAS A WIDTH OF X CENTIMETERS AND A PERIMETER OF 8X CENTIMETERS. A SQUARE HAS SIDES OF LENGTH 1/4 THAT OF THE RECTANGLE A) FIND THE LENGTH OF THE RECTANGLE B) FIND THE PERIMETER OF THE SQUARE C) FIND HOW MANY CCENTIMETERS … 
Algebra world problem
The length of a rectangle is 7 centimeters less than twice its width. Its area is 72 square meters. Find the dimensions of the rectangle. 
Width of a square
A rectangle has an area of 45 square centimeters and a length of 10 centimeters. What is the width of the rectangle? 
Math
The length of a rectangle is 5 centimeters less than three times it's width . It's area is 12 square centimeters. Find the dimensions of the rectangle 
math
the length of a triangle is 7 centimeters less than twice the width. if the area of the rectangle is 165 square centimeters, find the length and width. 
math
the length of a rectangle is 23 centimeters less than five times its width. Its area is 42 square centimeters. Find the dimensions of the rectangle