If

is the amount of salt in the tank at time

, then the rate at which this amount changes over time is given by the ODE


We're told that the tank initially starts with no salt in the water, so

.
Multiply both sides by an integrating factor,

:




Since

, we have

so that the amount of salt in the tank over time is given by

After 10 minutes, the amount of salt in the tank is
Answer:
the standard form is : -2x²+16x -31
Step-by-step explanation:
hello :
-2(x-4)²+1 = -2(x²-8x+16)+1 = -2x²+16x-32+1
-2(x-4)²+1 =-2x²+16x -31
Answer:
k=21
Step-by-step explanation:
x=7 X y=3 = 21
7 x 3 = 21
Answer:
They will be 400 mi apart after 4 hours.
Step-by-step explanation: