L = 45/W
2L + 2W = 28
Substitute 45/W for L in second equation and solve for W. Insert that value into the first equation and solve for L. Check by inserting both values into the second equation.
Please show me step by step if possible:
Find dimensions of a rectanglar rug whose perimeter is 28 ft and whose area is 45 ft².
The length (longer side) equal ___ft and width (shorter side) equal ____ft.
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