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Ksenya-84 [330]
3 years ago
5

The width of a rectangle is 3 less than 2 times the length. If the perimeter is 51 what is the actual length and width of the re

ctangle
Mathematics
1 answer:
zhuklara [117]3 years ago
6 0
Let l=length be length and w=width

w=2l-3

To find the perimeter add all the sides of the rectangle

Perimeter=w+w+l+l

Replacing w=2l-3

(2l-3)+(2l-3)+l+l=51

6l-6=51

add to both sides 6

6l=51+6

6l=57

Divide both sides with 6

l=57/6 \\ l=9.5

w=2l-3 \\ w=2(9.5)-3\\ w=19-3\\ w=16

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