A tank connected to two pipes (A and B) initially contains 300 gal of pure water. At time 0, a salt-water solution enters the tank through pipe A at the rate 4 gal/min, and pure water enters the tank through pipe B at the rate of 2 gal/min. Simultaneously, a drain is opened at the bottom of the tank, allowing the well-mixed solution to leave the tank at a rate of 3 gal/min.

(1) Suppose that the solution coming to the tank through pipe A contains 0.5 lb/gal of salt. What would be the amount of salt in the tank at the time t = 50 minutes?
(2) Suppose that the pipe A is closed at the time t = 50. How long would it take for the salt in the tank to be reduced to 1/2 of the value it had at time t = 50?

56

step-by-step explanation:

a. turk and mcalister

b. howard, mission, and market

c. yes. since streets end some do not cross yet are not parallel to others. example: mcalister and 5th

step-by-step explanation:

parallel lines are lines which do not intersect ever and look a lot like railroad tracks. turk, mcalister and golden gate are examples of these.

intersect are streets which cross each other and a car on one can reach the other. howard, mission, and market intersect with 6th.

skew lines are lines which neither intersect nor are parallel. these lines exist here because some streets end and never intersect another like mcalister and 5th.

y/x of point b= y/x of point a

step-by-step explanation:

(i got the same question, this was the correct answer.)