Answer:
F(x)=x-2
Step-by-step
This ones more complicated, but its that because the start is at -2, and its going one,
Given that the area is equal to twice the perimeter and the dimensions are:
length=4x ft, width=(x+6) ft
the perimeter will be:
P=2(L+W)
P=2(4x+(x+6))
P=2(4x+x+6)
P=2(5x+6)
P=(10x+12)
Area of the rectangle is:
A=4x(x+6)
A=4x²+24x
but:
2P=A
thus
2(10x+12)=4x²+24x
20x+24=4x²+24x
thus
4x²+4x-24=0
x²+x-6=0
x²-2x+3x-6=0
x(x-2)+3(x-2)=0
(x-2)(x+3)=0
thus the answer is:
x=-3 or x=2
thus
length=4x=4*2=8 ft
width=(x+6)=(2+6)=8 ft
Answer:
360
Step-by-step explanation:
6 executives control 90% of the 400 major media outlets
so we need to find 90% of 400
first, convert 90% to a decimal and multiply
0.9•400 gives us 360
so 360 media outlets are controlled by those 6 executives
hope this helps babe <3