Solve the problem.A certain noise produces  of power, designated as S. What is the decibel level of this noise?  where S0 is 10-12 watt/m2. (Round to the nearest decibel.)

A. 7 decibels
B. 64 decibels
C. 170 decibels
D. 74 decibels


Answer: D

Mathematics

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Find the volume of the described solid.The solid lies between planes perpendicular to the x-axis at x = - 4 and x = 4. The cross sections perpendicular to the x-axis are circular disks whose diameters run from the parabola y = x2 to the parabola y = 32 - x2.

A. ?
B. ?
C. ?
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A. -9 B. 17 C. 9 D. -17

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