15-2x=3x
Add 2x to both sides
15=5x
Divide by 5 on both sides
3=x
Hope it helps (:
Answer:
The correct product is 6,252.
I don't know what Dan did wrong lol
life: people tell others all the time how they feelwhethe it is appropriate or not.
Let the length be x and the width be w
The perimeter will be:
2x+3w=1500
thus
3w=(1500-2x)
w=(1500-2x)/3
w=500-2/3x
The area will be:
A=x*w
A=x(500-2/3x)
A=500x-(2/3)x²
The above is a quadratic equation; thus finding the axis of symmetry we will evaluate for the value of x that will give us maximum area.
Axis of symmetry:
x=-b/(2a)
from our equation:
a=(-2/3) and b=500
thus
x=-500/[2(-2/3)]
x=375
the length will be 375 m
The width will be 250 m
