Mathematics, 23.12.2019 03:31 tvoalicea
A50-gallon barrel is filled completely with pure water. salt water with a concentration of 0.3 pounds/gallon is then pumped into the barrel, and the resulting mixture overflows at the same rate. the amount of salt (in pounds) in the barrel at time t (in minutes) is given by q(t) = 15(1 − e−kt) where k > 0.
find k if there are 8.5 pounds of salt in the barrel after 20 minutes. solve for k exactly and then give your answer to 4 decimal places.
Answers: 2
Mathematics, 21.06.2019 18:30
The u-drive rent-a-truck company plans to spend $13 million on 320 new vehicles. each commercial van will cost $25 comma 000, each small truck $50 comma 000, and each large truck  $80 comma 000. past experience shows that they need twice as many vans as small trucks. how many of each type of vehicle can they buy?
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Mathematics, 21.06.2019 21:00
Rewrite the following quadratic functions in intercept or factored form. show your work. y = 4x^2 - 19x- 5
Answers: 2
A50-gallon barrel is filled completely with pure water. salt water with a concentration of 0.3 pound...
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