SOLUTION: 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?

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!
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x = length
y = width
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2x + 2y = 24
y = 5
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copy and paste the above linear system in standard form into this matrix-method solver:
https://sooeet.com/math/system-of-linear-equations-solver.php
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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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Solve quadratic equations, quadratic formula:
https://sooeet.com/math/quadratic-formula-solver.php
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Solve systems of linear equations up to 6-equations 6-variables:
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