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19alexanderetha
18.12.2020 •
Mathematics
A piece of wire that is 42 meters long is bent into the shape of a rectangle whose length is twice its width. Find the length of the rectangle.
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Ответ:
As below
Step-by-step explanation:
the perimeter of our rectangle is 42 meters
and Length is 2 times the width. that is L= 2W
since there are 2 of the Length and Width sides..
42 = 2(L) +2(W)
42= 2(2W) + 2W
42 = 4W + 2W
42 = 6W
W = 42/6
W = 7
now that we know W plug it into our 1st equation
L = 2 (7)
L = 14
Length = 14
width = 7
:)
Ответ:
So i did this in like 4th grade its easy so basically its A=3 to the 4 power then 4÷7=X but i figured out X its 0.7y=x