Friday

July 25, 2014

July 25, 2014

Posted by **Anonymous** on Tuesday, September 3, 2013 at 6:25pm.

A=91m^2

A=L•W

L=(2x+3)m

W=(x+2)m

91m^2=(2x+3)m•(x+2)m

91=(x+2)(2x+3)

Now what?

- Geometry/algebra 1 -
**MathGuru**, Tuesday, September 3, 2013 at 7:00pmSet the equation equal to 0:

2x^2 + 4x + 3x + 6 - 91 = 0

2x^2 + 7x - 85 = 0

Factor:

(2x + 17) (x - 5) = 0

Set the factors equal to 0:

2x + 17 = 0; x = -17/2

x - 5 = 0; x = 5

You can't have a negative number for this problem, so use x = 5 for the value of x.

I'll let you take it from here to determine the dimensions of the rectangle.

**Related Questions**

geometry - The area of a rectangle is given by A = x2 + 4x – 5. Find the value ...

geometry - rectangle a is similar to smaller rectangle b. the scale factor is 5/...

geometry - given constant perimeter (people),Irene made a rectangle with an area...

geometry - The height of triangle ACE is 12 and base AE=20. A rectangle is ...

Algebra - How would I complete this problem? Geometry. The area of a rectangle ...

Math - The first question is this: Helen designs a rectangle with an area of 225...

geometry - Use formulas to find the lateral area and surface area of the given ...

math117 - The area of a rectangle of length x is given by 3x2 +5x. Find the ...

geometry - A circle of radius r is centered at the origin and a rectangle is ...

Math - If the length of a rectangle is (2x-1)cm and its width is (x+3)cm. How do...