Thursday

November 20, 2014

November 20, 2014

Posted by **SALINA** on Thursday, July 16, 2009 at 2:34pm.

- MATH -
**Marth**, Thursday, July 16, 2009 at 2:43pmlet x = the width

let x+3 = the length

The area of a rectangle is length*width

x(x+3) = 54

x^2 + 3x = 54

x^2 + 3x - 54 = 0

(x+9)(x-6) = 0

x = 6, -9

A negative answer is irrelevant for this problem - the dimensions cannot be negative.

x = 6

x+3 = 9

The width is 6, and the length is 9.

**Answer this Question**

**Related Questions**

math - THe lenght of a rectangler is 3m more than its width .If its area its ...

math - a rectangle is twice as long as it is wide. if both of its dimensions are...

Math - The length of a rectangle is 11 cm more than its width. The area of the ...

Math - How do I find the dimensions of a rectangle if the length of the ...

math - The length of a rectangle is 2 inches longer than the width. The area of ...

Algebra - the length of a rectangle is 5m more than twice its width. and the ...

Algebra - The length of a rectangle is more than double the width, and the area...

beginning algebra - The length of a rectangle is 1ft more than twice its width, ...

MATH0098 - The length of a rectangle is 3ft more than twice its width, and the ...

Math - If the length of a rectangle is (2x-1)cm and its width is (x+3)cm. How do...