Evaluate the cylindrical coordinate integral.
A. 90
B. 60
C. 30?
D. 90?
Answer: B
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Multiply or divide as indicated.(-5) × (-7) × (-4)
A. 140 B. -150 C. -140 D. -40
Find parametric equations to represent the line segment from (-3,4) to (12,-8).
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Solve the system using Gaussian elimination. If (x, y, z) is the solution to the system, give the value of 
.
?
?
A. -14 B. 90 C. -62 D. 14 E. -42
Use Bayes' rule to find the indicated probability.Two stores sell a certain MP3 players. Store A has 34% of the sales, 5% of which are of defective items, and store B has 66% of the sales, 1% of which are of defective items. The difference in defective rates is due to different levels of pre-sale checking of the product. A person receives a defective item of this product as a gift. What is the probability it came from store B?
A. 0.275 B. 0.22 C. 0.5667 D. 0.7083