Saturday

August 30, 2014

August 30, 2014

Posted by **michelle** on Wednesday, July 28, 2010 at 3:57pm.

a).

Find a polynomial A(x) that represents the new area.

b).

Find A(2)

c).

If x=2 feet then how much less area does he have than he thought he had?

Answer:

a).

A(x)=(200-x)*(200+x)

A(x)=40,000-x^2

b).

A(2)=40,000-(2)^2

A(2)=40,000-4

A(2)=39,996 feet^2

c).

Initial area= 200*200=40,000 feet^2

Present area A(2)=39,996 feet^2

40,000 – 39,996= 4 feet ^2

I need to know if i done this correctly.

- Algebra -
**Henry**, Wednesday, July 28, 2010 at 5:07pmAll of your answers are correct, and

you did a good job of showing your

work. Good job!!

- Algebra -
**michelle**, Wednesday, July 28, 2010 at 9:35pmThank you so much!

**Related Questions**

math algebra - a square parking lot has a surface area of (w^4-2w^2x+x^2) square...

Math - Julie is digging a square area in her backyard for a vegetable garden. If...

help - A lot is in the shape of a trapezoid. The sum of the bases is 180 feet. ...

geometry - A lot is in the shape of a trapezoid. The sum of the bases is 180 ...

math - i need help in solving these 2 problems...please help..thank you... Your ...

Mathematics - A lot which is 3 feet times as long as it is wide is enclosed by a...

Math - A lot is in the shape of a trapezoid. The sum of the bases is 180 feet. ...

Geometry - A lot is in the shape of a trapezoid. The sum of the bases is 180 ...

7th grade math help square roots - 4. Wei-Min makes a square quilt that has an ...

HELP!!!! - Darnell used one small can of polyurethane to seal a square patch of ...