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Seawater with a concentration of 8000 g/m3 is pumped into a well-mixed tank at a rate of 0.6 m3/hr. Because of faulty design work, water is evaporating from the tank at a rate of 0.025 m3/hr. The salt solution leaves the tank at a rate of 0.6 m3/hr.
(a) If the tank originally contains 1 m3 of the inlet solution, how long after the outlet pump is turned on will the tank run dry?
(b) Use numerical methods to determine the salt concentration in the tank as a function of time.
what is the cost of the bond, the annual interest and yield.
A rectangular carpet has a perimeter of 218 inches. The length of the carpet is 87 inches more than the width. What are the dimensions of the carpet?
the number of seconds of continuous spray yielded by cans of a brand of outdoor fogger is normally distributed with a
Mathematicians have been searching for a formula that yeilds prime numbers. One such formula was x^2-x+41. Select some numbers for x, substitute them in the formula
If we want to interpret the given integral as the moment of inertia of a solid about some axis, what is the axis and what is the density of the solid?
suppose the people in a neighborhood wait for a bus that is supposed to come every 8 minutes. the bus arrives in 2 minutes, 6 minutes what is the probability distribution approppiate.
The shortlist consists of 7 men and 3 women. Because all the shortlisted applicants are considered to be equally qualified, the names of two of them are drawnn, one after the other at random, to be called for an interview.
Find the probability that a loaf is smaller than twenty-three ounces?
question independent bank randomly selected 400 checking account customers amp found that 150 of them also had savings
Suppose Frank owns 8,000 shares of Company X and 6,000 shares of Company Y. The total value of Franks holdings of these two companies is $400,000.
If n points are equally spaced on the circumference of a circle, what is the probability that three points chosen at random will form a right triangle?
At that instant L and W are increasing at a rate of 10 m/s while H is decreasing at a rate of 1 m/s. Find the rate at which the surface area S is changing at that instant.
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