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dontworry48
23.06.2019 •
Mathematics
Arectangles length is 1.5 times its width. the perimeter of the rectangle is four more than 3 times the length. what are the dimensions of the rectangle
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Ответ:
8 by 12 units
Step-by-step explanation:
Let w represent the width of the rectangle. Then the length is 1.5w. The perimeter is 4 more than 3 times this, so is (3(1.5w) +4) = 4.5w+4
The perimeter is given by the formula ...
P = 2(length + width)
Filling in the given values for the variables, we have ...
4.5w +4 = 2(w +1.5w)
4 = 0.5w . . . . . . subtract 4.5w and collect terms
8 = w . . . . . . . . . multiply by 2
length = 1.5×8 = 12
The rectangle is 8 units wide and 12 units long. The perimeter is 40 units.
Ответ:
Step-by-step explanation:
My guess is 0.
If you started at ground level (0) , and fall 80 ft down, it would be -80. But if you go back up 80 ft up, it would be back to 0.
Good luck! :)