ciel8809
03.12.2020 •
Mathematics
The length of a rectangle is 2 more than twice the width. The area of the
rectangle is 60. Find the dimensions of the rectangle. What is the length of
the rectangle?
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Ответ:
w=5 , L= 2+2(5)=12
Step-by-step explanation:
L=2+2W
A= 60
LxW=60, now we will replace the L
(2+2W)(W)=60 we multiply
2w^2+2w=60
2w^2+2w-60=0 we divide by 2 the equation so we can work easier
w^2+w-30=0
find out w using the quadratic equation
we will get 2 solution,
w=5 and another solution is -6, which is not valid, as the side can not be negative
Ответ:
x=(11+16y)/20
y=(20x-11)16
Step-by-step explanation: