Thursday

July 31, 2014

July 31, 2014

Posted by **Carlos** on Saturday, July 2, 2011 at 4:11pm.

- Algebra II -
**Damon**, Saturday, July 2, 2011 at 5:08pm(5+x)(6+x) = 3*30 = 90

30 + 11 x + x^2 = 90

x^2 + 11 x - 60 = 0

(x+15)(x-4) = 0

x = 4

check

9*10 = 3*30 yes

**Related Questions**

math - A rectangle is 4 inches wide by 7 inches long. When the length and width ...

Algebra - The length of a rectangle is (x+2) inches. The width of the rectangle ...

geometry - A rectangle with an area of 32 inches squared has one side measuring ...

Math - A rectangle is 6 cm long and 5 cm wide. When each dimension is increased ...

Math - If the width of a rectangle is increased by 2 inches, the area is 140 ...

pre-algebra - One side of a rectangle is 6 in and the other side is x inches. ...

algebra - A rectangle is 16 inches wide and 20 inches long. If the length of ...

Math - A Quadratic Word Problem If one side of a square is increased by 2 inches...

Math - If one side of a square is increased by 2 inches and an adjacent side is ...

MAth - A rectangle is 15 inches long and 6 inches wide. What is the area of the ...