Find the volume of the solid generated by revolving the region bounded by the given lines and curves about the 
. y = 
, y = 0, x = 0, x = 9
A. 9?
B. 27?
C. 
?
D. 
?
Answer: C
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Change the Cartesian integral to an equivalent polar integral, and then evaluate.
A. 
B. 
C. 
D. 
Reverse the order of integration and then evaluate the integral.
A. 
tan-1 9 - 
ln 82
B. 
tan-1 9 - 
ln 82
C. 
tan-1 9 - 
ln 82
D. 
tan-1 9 - 
ln 82
Solve.From a series of measurements, the mean voltage in a certain line is found to be 26,420 V with a standard deviation of 210 V. A breaker must be installed to protect against surges in voltage. If the breaker is set so that it is activated only about 0.1% of the time, at what level is it set?
A. 26,630 V B. 27,260 V C. 26,840V D. 27,050 V
Find the probability. Round to the nearest ten-thousandth when necessary.A family has five children. The probability of having a girl is 1/2. What is the probability of having at least 4 girls?
A. 0.1875 B. 0.1563 C. 0.3125 D. 0.0313