Solve.Find the volume of the solid generated by revolving the region in the first quadrant bounded by the coordinate axes, the curve y = e-3x, and the line x = 8 about the y-axis.

A. ?(1 - 23 e-24)
B. ?(1 - 25 e-24)
C. - ?(1 + 25 e-24)
D. ?(1 - 24 e-24)


Answer: B

Mathematics

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Solve the system. x - y + 5z = 272x + z = 5 x + 4y + z = -3

A. {(0, -2, 5)} B. {(5, -2, 0)} C. ? D. {(5, 0, -2)}

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Round the whole number to the given place.In 2005, a company spent $593,749,557 on advertising. Round the advertising figure to the nearest hundred-thousand.

A. 593,700,000 B. 593,800,000 C. 600,000,000 D. 500,000,000

Mathematics

Divide.

A. x2 - 5x + 2 + 
B. x2 + 5x + 2
C. x2 + 5x + 2 + 
D. x2 - 5x + 2

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Perform the row operations on the matrix and write the resulting matrix.Replace R2 by R1 + R2 

A.

B.

C.

D.

Mathematics