Asked by gmoney
the length of a rectangle is 7 times as long as its width. if the perimeter is 72 meters what is the length and width of the rectangle? please show how to set up eqaution.
Answers
Answered by
Jen
L=7W
2L+2W=72
2(7W)+2W=72
14W+2W=72
16W=72
W=4.5, now substitute that back in either original equation to solve for L and
L=31.5
Substitute in both original equations, both work.
2L+2W=72
2(7W)+2W=72
14W+2W=72
16W=72
W=4.5, now substitute that back in either original equation to solve for L and
L=31.5
Substitute in both original equations, both work.
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