Answer:
see picture with work shown
Answer:
dv = surface area * dh
so
dv/dt = surface area * dh/dt
width at surface = 40 + (80-40)(30/40)
= 40 + 30 = 70 cm = 0.70 m
so
surface area = 9 * .7 = 6.3 m^2
so
.3 m^3/min = 6.3 m^2 * dh/dt
and
dh/dt = .047 meters/min or 4.7 cm/min
Step-by-step explanation:
Answer:
D.
Step-by-step explanation:
After the third step, take the square root of both sides.
Third Step:

Thus, the fourth step is:

The left side cancels:

D.
9x1
You would add 2+7 which =9 then x+1 that’s 1 so it would be 9x1
Answer:not sure what u talking about
Step-by-step explanation: