kanajahbunn
31.01.2020 •
Mathematics
The length of a rectangle is 5 m more than twice the width, and the area of the rectangle is 63 m2 . find the dimensions of the rectangle.
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Ответ:
L=2w+5
A=LW
63=(2W+5)*W
63=2W^2+5W
2W^2+5W-63=0
(2W-9)(W+7)=0
2W-9=0
W=9/2
W=4.5 (ANS. FOR THE WIDTH)
L=2*4.5+5
L=9+5
L=14 (ANS. FOR THE LENGTH)
PROOF:
63=14*4.5
63=63
Have a nice day :D
Ответ:
5.69e+26
Step-by-step explanation:
10^26=1e+26
5.69x1e+26
5.69e+26