Answer:
The answer would be 94.14
Answer:
12.5 hours of training
Step-by-step explanation:
for one hour it cost a total of 240 dollars 3000÷240 = 12.5
This is the concept of calculus:
dV/dt*dh/dV=dh/dt
Volume of the cone is given by:
V=(1/3)πr^2h=1/3*π*3^2*h=3π
dV/dh=3*π=3π
dh/dV=1/(3π)
dV/dt=100 m^2/sec
thus;
dh/dt=1/(3π)*100
=33 1/3 m/s
Answer:
l = 14
Step-by-step explanation:
The perimeter of a rectangle is
P =2(l+w)
The width is x-6
w = x-6
The length is 8 units longer than the width
l = w+8
l = x-6+8
l = x+2
We can substitute this into the equation for Perimeter, which is given as 40
40 = 2(x+2 + x-6)
Combine like terms
40 =2 (2x-4)
Divide by 2
40/2 = 2/2 (2x-4)
20 = 2x-4
Add 4 to each side
20+4 =2x-4+4
24 = 2x
Divide by 2
24/2 =2x/2
12=x
We want to know the length
l = x+2
l =12+2
l = 14
Step-by-step explanation: