SOLUTION: The city will pay to have soft pavement made of recycled tires installed in the playground. In the first plan, one side is 15 yards longer than the other side. Which equations mode

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: The city will pay to have soft pavement made of recycled tires installed in the playground. In the first plan, one side is 15 yards longer than the other side. Which equations mode      Log On


   

Question 949195: The city will pay to have soft pavement made of recycled tires installed in the playground. In the first plan, one side is 15 yards longer than the other side. Which equations model these conditions if x is one of the dimensions of the playground? Select all that apply.
x(x - 15) = 324
x^2 - 15 = 324
x(x + 15) = 324
(x + 7.5)(x - 7.5) = 324
x^2 + 15x - 324 = 0
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

x%28x+-15%29+=+324................fit if x=27, sides are x=27, and x=27-15=12
x%5E2+-15+=+324 .........does not fit,solutions are x+=+sqrt%28339%29, x+=+-sqrt%28339%29
x%28x+%2B+15%29+=+324 .............fit if x=12, sides are x=12, and x=12%2B15=27
%28x+%2B+7.5%29%28x+-+7.5%29+=+324 .........does not fit,solutions are x+=+-19.5, x+=+19.5
x%5E2+%2B+15x+-324+=+0 ................fit if x=12, sides are x=12, and x=12%2B15=27