SOLUTION: If a rectangle's length is 4 meters more than its width, find all possible lengths so that the area of the rectangle will be at least 25m2.

Algebra ->  Testmodule -> SOLUTION: If a rectangle's length is 4 meters more than its width, find all possible lengths so that the area of the rectangle will be at least 25m2.       Log On


   

Question 1197412: If a rectangle's length is 4 meters more than its width, find all possible lengths so that the area of the rectangle will be at least 25m2.
Answer by josgarithmetic(39623) About Me  (Show Source):
You can put this solution on YOUR website!
Follow along exactly how the description is written.

w and w+4

w%28w%2B4%29%3E=25

w%5E2%2B4w-25%3E=0

critical w values
w, %28-4%2B-+sqrt%2816%2B4%2A25%29%29%2F2
%28-4%2B-+sqrt%28116%29%29%2F2
-2%2B-+sqrt%284%2B25%29
-2%2Bsqrt%2829%29----------width w must be this value or larger.