Find the sum.

A.
B.
C. - 
D. Does not exist


Answer: A

Mathematics

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Solve the problem.Let y(t) be the population of a species of plant that is being harvested, for t ? 0. Consider the harvesting model   where h is the annual harvesting rate, y0 is the initial population of the species, and t is measured in years. If y0 = 5,000, what harvesting rate should be used to maintain a constant population of y = 5,000, for t ? 0?

A. h = 25 yr-1 B. h = 5,000 yr-1 C. h = 15 yr-1 D. h = 150 yr-1

Mathematics

Solve the problem.One conveyor belt can move 1000 boxes in 6 minutes. Another can move 1000 boxes in 9 minutes. If another conveyor belt is added and all three are used, the boxes are moved in 3 minutes. How long would it take the third conveyor belt alone to do the same job?

A.  minute
B. 18 minutes
C. 1 minutes
D.  minute

Mathematics

Solve the problem.Which of the following investments would not be considered a primary asset class?

A. precious metals B. stock swaps C. cash D. real estate

Mathematics

Match the given equation with one of the graphs.9x2 - 25y2 = 225

A.

B.

C.

D.

Mathematics