Tuesday

July 29, 2014

July 29, 2014

Posted by **HELP HELP HELP MNHS** on Sunday, January 6, 2013 at 11:46pm.

(pls write the solutions.... thanks)

- AREA -
**Reiny**, Monday, January 7, 2013 at 8:35amoriginal size of lobby : x m by x m

new size = x-2 by x+2

area = (x-2)(x+2) = x^2 - 4

cost equation:

160(x^2 - 4) = 35360

x^2 - 4 = 221

x^2 = 225

x = ± 15 , but x must be positive, so

x = 15

**Related Questions**

math - Lena is tiling a square ﬂoor with each side 3 metres long. Tiles ...

English - Select the letter of the answer that best corrects the element in ...

math - a house has two rooms of equal area. one room is square and the other ...

math - Suppose that you are responsible for predicting the cost of constructing ...

math-optimal diameterand height - A cylindrical oil-storage tank is to be ...

the lagrange multiplier equation - A cylindrical oil-storage tank is to be ...

Statistics - A bank lobby has four video cameras positioned to view the entire ...

lagrange multipliers - A cylindrical oil-storage tank is to be constructed for ...

physics - At high noon, the Sun delivers 1000W to each square meter of a ...

4th grade word problems - if tiles at a store cost .$20 for a 1"x1" square and...