6 pounds will cost $17.88
If you set up a proportion like this: 7.45/2.5=?/6, then all you have to do is cross multiply. 6x7.45 is 44.7, then 44.7 divided by 2.5 is 17.88
Answer:
They are congruent
Step-by-step explanation:
We are given with the following given
dV/dt = 35 m3/min
h = (3/2)D
What is asked is
dr/dt at t = 7 min
The volume of a cone is
V = (1/3)πr²h
From the given
h = (3/2)D
since D = 2r
h = 3r
Subsituting
V = πr³
At t = 7 min, the volume is
V = 35(7)
V = 245
and the radius is
245 = πr³
r = 4.27
Differentiating the volume
dV/dt = 3πr² dr/dt
From the given
dV/dt = 35
Subsituting
35 = 3πr² dr/dt
So,
dr/dt = 0.20 m/s
and
dh/dt = 0.60 m/s
The figure to the left is 41. The middle figure is 59. The figure to the right is 15