Saturday

November 22, 2014

November 22, 2014

Posted by **joanna** on Wednesday, September 18, 2013 at 5:00am.

- math -
**Graham**, Wednesday, September 18, 2013 at 5:56amSome details of the question appear to be missing.

I'm assuming the pen is to be rectangular and further that you want to find the length and width that enclose the maximum possible area.

Let the width of the pen be x, so that the length is 20-3x the area (y) is:

y = 20 x -2 x^2

y' = 20 -4 x

Maximum area exists when y'=0

Solve for x.

**Answer this Question**

**Related Questions**

algebra - please help me for this problem.im not good in math.the challenge ...

Pre-Calc - A farmer is making a pig pen next to the barn. He has enough ...

math - a farmer has enough fencing to build 40 feet of fence. He wishes to build...

algebra - Ian wants to build a rectangular pen for his animals. One side of the ...

Calculus optimization problem - A rectangular dog run is to contain 864 ft ^2. a...

Math, Quadratics - Farmer John is building a pen to keep his pig in. John has ...

Accounting - Please check my answers. Identify each of the following as either ...

Calculus 2 - A farmer wishes to build a fence for 6 adjacent rectangular pens. ...

Math: Pre-calculus - A rancher wants to build a rectangular pen with an area of ...

math - Howard has 102 feet of fencing. What is the area of the largest square ...