Answer:
384 is the cost after you minus 20%
Step-by-step explanation:.
The last four linesof the poem reveals the solution in the poem as the first reveals the problem
Volume of Cylinder V = πr²h
diameter = 6 feet, radius = 6/2 = 3 feet
dV/dt = (dV/dh) * (dh/dt) by change rule.
V = <span>πr²h
dV/dh = </span>πr² = π*3² = 9π ft²<span>
dV/dt = 2 ft</span>³/min
<span>dV/dt = (dV/dh) * (dh/dt)
</span>
2 ft³/min = 9π ft² * (dh/dt)
9π ft² * (dh/dt) = 2 ft<span>³/min
</span>
(dh/dt) = (2 ft³/min)/(9π ft<span>²)
(dh/dt) = (2/</span>9π) ft/min
So the water level is rising at (2/9<span>π) ft/min.</span>
Decay Rate = ln (2) / Half-Life
Decay Rate = .693147 / 6
Decay Rate =
<span>
<span>
<span>
0.1155245
</span>
</span>
</span>
days
Answer:
a
Step-by-step explanation: