stophendless9780
19.10.2019 •
Mathematics
The length of a rectangle is three cm greater than its width. the perimeter is 24cm. what are the dementions of the rectangle?
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Ответ:
24= 2w+2l
Substitute for l
24= 2w+2(w+3)
24= 2w+2w+6
24= 4w+6
18=4w
4.5=w
Plug in the w value
l=(4.5)+3
l=7.5
Final Length-7.5, Width-4.5
Ответ:
W=3
You have to test it out of what's 3 times longer
Ответ:
350 + 1400 + 140 = 1890