SOLUTION: find the dimensions of a rectangle whose perimeter is 20 meters and whose area is 21 square meters.

SOLUTION: find the dimensions of a rectangle whose perimeter is 20 meters and whose area is 21 square meters.

Algebra.Com

Question 900676: find the dimensions of a rectangle whose perimeter is 20 meters and whose area is 21 square meters.
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
2x+2y=20 and xy=21.
Just solve these simultaneous equations as a system.

Perimeter equation simplifies to x+y=10.

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The value for x that you must use is .

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