Asked by jim
find the dimensions of a rectangle with a perimeter of 780m if the length is 15 more than 4 times the width.
Answers
Answered by
Jen
2L+2W=780
L=4W+15
2(4W+15)+2W=780
8W+50+2w=780
10W+50=780
10W=730
W=73, substitute this back into either original equation to find L,
L=307
L=4W+15
2(4W+15)+2W=780
8W+50+2w=780
10W+50=780
10W=730
W=73, substitute this back into either original equation to find L,
L=307
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