Thursday

March 26, 2015

March 26, 2015

Posted by **Anonymous** on Tuesday, November 30, 2010 at 4:59pm.

- algebra -
**Reiny**, Tuesday, November 30, 2010 at 5:50pmLet the length be y ft and the width be x ft.

(I am looking at 2 widths and 1 length)

so y + 2x = 1280

y = 1280-2x

Area = xy

= x(1280-2x)

= - 2x^2 + 1280x

complete the square ....

Area = - 2(x^2 - 640x**+ 102400 - 102400**)

= - (x - 320)^2 + 204800

so x = 320 , then y = 1280-640 = 640

the width is 320 ft, and the length is 640 ft

- algebra -
**Reiny**, Tuesday, November 30, 2010 at 5:51pm3rd last line should say

= -2(x - 320)^2 + 204800

typo at the -2 in front, does not affect the answer.

- algebra -
**cait**, Wednesday, December 12, 2012 at 4:35pmdimensions: 320x640

max. area 204800

- algebra -
**Anonymous**, Saturday, November 8, 2014 at 12:09pmergjoiso;gs;g

**Answer this Question**

**Related Questions**

Algebra - A community college campus plans to construct a rectangular parking ...

College Algebra - The campus of a college has plans to construct a rectangular ...

pre- calc - area of a parking lot: One campus of Houston community college has ...

math - Houston Community College is planning to construct a rectangular parking ...

Calculus - Glenview Community College wants to build a rectangular parking lot ...

Pre-Calc - One campus of HCC has plans to construct rectangular parking lot on ...

Calculus - a college is planning to construct a new parking lot. the parking lot...

Calculus - a college is planning to construct a new parking lot. the parking lot...

math - A rectangular parking lot is to be constructed on land bordered on one ...

Algebra 2 - 2. a farmer has 400 meters of fence with which to enclose a portion ...