Friday

March 27, 2015

March 27, 2015

Posted by **Help now fast due tommorow!!!!!!!!!!!!!!!!!!!!!!!!** on Monday, March 29, 2010 at 6:36pm.

A) 256.5 feet b) 258 feet

c) 256 feet d) 257 feet

please show work!

i need help fast

- Precalculus -
**MathMate**, Monday, March 29, 2010 at 6:47pmLet L=total length of fencing.

x=width

(L/2-x)=length

A(x)=Area=x(L/2-x)

Differentiate A with respect to x, and equate A'(x) to zero and solve for x=x0 which gives the maximum or minimum area.

Differentiate A'(x) again to get A"(x).

Confirm that A"(x0) is negative for a maximum (and positive for a minimum).

You should find that x0=width=length.

Post your answer for a check if you wish.

- Precalculus -
**Help now fast due tommorow!!!!!!!!!!!!!!!!!!!!!!!!**, Monday, March 29, 2010 at 9:50pmis it 258

- Precalculus -
**MathMate**, Tuesday, March 30, 2010 at 9:39pmYes, that's correct.

**Answer this Question**

**Related Questions**

Precalculus - a farmer has available 1032 feet of fencing and wishes to enclose ...

Precalculus - a farmer has available 1032 feet of fencing and wishes to enclose...

Precalculus help fast - a farmer has available 1032 feet of fencing and wishes ...

math - An ostrich farmer wants to enclose a rectangular area and then divide it ...

Math - A pig farmer wants to enclose a rectangular area and then divide it into ...

Calculus - A pig farmer wants to enclose a rectangular area and then divide it ...

Calculus - A ostrich farmer wants to enclose a rectangular area and then divide ...

algebra2 - A farmer has 600 yards of fence. He will use some of the fence to ...

Algebra - A farmer plans to enclose a rectangular region using part of his barn ...

Math - 1. A gardener has 140 feet of fencing to fence in a rectangular vegetable...