Question 827391: The perimeter of a rectangular sandbox is 24 feet. The width of the sandbox is 5 feet. What is the length of one of the sides? Answer by TimothyLamb(4379) (Show Source):
You can put this solution on YOUR website! ---
x = length
y = width
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2x + 2y = 24
y = 5
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solution:
x = length = 7 ft
y = width = 5 ft
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system matrix
2 2
0 1
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inverse of system matrix
0.5 -1
0 1
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determinant of system matrix = 2
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