Solve the problem.Evaluate  at t = 9 for the function w(x, y, z) = exyz2; x = t, y = t, z = .

A.
B. e
C. 0
D. - e


Answer: C

Mathematics

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Give all solutions of the nonlinear system of equations, including those with nonreal complex components.x2 + 3xy + y2 = 4 x2 - 3xy - y2 = 4

A. {(2, -6), (-2, 6)} B. {(2, 0), (-2, 0)} C. {(2, 0), (-2, 0), (2, -6), (-2, 6)} D. {(0, 2), (0, -2), (2, -6), (-2, 6)}

Mathematics

Find the sum of the terms in the geometric sequence.-15, -3, - , - , . . .

A. -15
B. - 
C. - 
D.

Mathematics

The concentration y of a certain drug in the bloodstream t hours after an oral dosage (with ) is given by the equation . What is the concentration after 6 hours? Round your answer to one decimal place. ?

A. 106.3 B. ?1,499.1 C. 222.0 D. 40,242.9 E. 93.7

Mathematics

Solve.The weight of a liquid varies directly as its volume V. If the weight of the liquid in a cubical container 4 cm on a side is 192 g, find the weight of the liquid in a cubical container 5 cm on a side.

A. 15 g B. 375 g C. 105 g D. 125 g

Mathematics