SOLUTION: A rectangle has length x units and width y units. The rectangle has the same perimeter as an equilateral triangle with a side of m units.Find x in terms of m and y. (A) m + y

Algebra ->  Customizable Word Problem Solvers  -> Geometry -> SOLUTION: A rectangle has length x units and width y units. The rectangle has the same perimeter as an equilateral triangle with a side of m units.Find x in terms of m and y. (A) m + y      Log On

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Question 264866: A rectangle has length x units and width y units. The rectangle has the
same perimeter as an equilateral triangle with a side of m units.Find x in terms of m and y.

(A) m + y (B) m - y (C) 3m - 2y (D) 1/2(m+y) (E) 1/2(3m-2y)

Answer by JBarnum(2146) About Me  (Show Source):
You can put this solution on YOUR website!
2x+2y=p for the rectangle
m+m+m=p for equilateral triangle
the rectangle "p" = the triangle "p"
2x%2B2y=3m solve for x
2x%2B2y-2y=3m-2y
2x=3m-y
%282x%29%2F2=%283m-2y%29%2F2
x=%283m-2y%29%2F2orx=%281%2F2%29%283m-2y%29