Answer:
1/10
Step-by-step explanation:
1/10 is the answer bc he gave his friend 100/1000 simplified form 1/10
Answer:
36
Step-by-step explanation:
I just took the test
Good luck doing your khan academy
Answer:
HiStep-by-step explanation:
J
10000000000. Since your multiplying 10 by 10, 10 times. You would have 10 zeroes.
Answer:
Step-by-step explanation:
concentration = amount of salt/solution
A) Initial concentration= 90/1000 = 0.09
Q = quantity of salt
Q(0) = 90 kg
Inflow rate = 8 l/min
Outflow rate = 8 l/min
Solution = 1000 L at any time t.
Salt inflow = 0.045 * 8 per minute
= 0.36 kg per minute
This is mixed and drains from the tank.
Outflow =
Thus rate of change of salt
Q'(t) = inflow - outflow =
Separate the variables and integrate
Use the fact that Q(0) = 90
90 = 360-A
A = 270
So
B) Q(t) = 360-270e^-0.004 = 91.07784
C) When t approaches infinity, we get
Q(t) tends to 360
So concentration =360/1000 = 0.36