Saturday

April 19, 2014

April 19, 2014

Posted by **Jessica** on Wednesday, October 24, 2007 at 11:17pm.

This is what I have..is it rihgt?

5x^2+5x+2-84

5x^2+5x-82=0

-5+-the square root of 5^2-4(5)(-82)/2(5)

-5+- the square root of 25+1640/10

-5+- the square root of 1665/10

L=2+5x

L=2+5(3.58)

L=20.06 cm

W=3.58 Cm

- Geometry Help -
**Reiny**, Wednesday, October 24, 2007 at 11:26pmI don't know how you got your equation.

let the width be x

then the length is 5x+2 and

x(5x+2)=84

5x^2 + 2x - 84 = 0

now solve that.

(Igot x=3.9 and a negative x value)

**Related Questions**

Algebra/geometry - a rectangle has a width of 4 cm less than it's length. if a ...

algebra - The length of a rectangle is 2 cm more than four times the width. If ...

geometry - The width of a rectangle is 6 cm less than its length. If the area of...

Algebra 1 - The length of a rectangle is 4 cm more than the width. The area of ...

algebra - The length of a rectangle is 6 cm more than four times the width. If ...

algebra , help - Can someone help me set up the equations thanks. Directions: ...

A=LxW - Length of a rectangle is 13 cm less than 5 times it's width. Its area is...

Algebra - A rectangle was 25 cm longer than it was wide. A new rectangle was ...

math - The length of a rectangle is 2 cm more than three times the width. Find ...

math - The length of a rectangle is 5 cm more than twice the width. The ...