Answer:
Step-by-step explanation:
Let the length of the shorter piece be x
Then the longer piece is x + 7
- x + x + 7 = 45
- 2x = 45 - 7
- 2x = 38
- x = 19
Short piece = 19 in
Long piece = 26 in
Let

be the amount of salt (in pounds) in the tank at time

. We're given that

.
The rate at which the amount of salt in the tank changes is given by the ODE






Given that

, we find that

so that the amount of salt in the tank is described by

The tank will be filled when

, or after

minutes. At this time, the amount of salt in the tank is
Answer:
1.Multiply the whole number by the denominator.
2.Add the answer from Step 1 to the numerator.
3.Write answer from Step 2 over the denominator.
Step-by-step explanation: