Find the expected value.Suppose that 1,000 tickets are sold for a raffle that has the following prizes: one $300 prize, two $100 prizes, and one hundred $1 prizes. What is expected value of a ticket?
A. $300
B. $0.60
C. $1
D. $100
Answer: B
Mathematics
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Use a spherical coordinate integral to find the volume of the given solid.the solid between the spheres 
and 
A. 
?
B. 
?
C. 
?
D. 
?
Mathematics
Graph the point symmetric to the given point.Plot the point (-5, 0), then plot the point that is symmetric to (-5, 0) with respect to the x-axis.
A. 
B. 
C. 
D. 
Mathematics
In a recent pretrial run for the world water speed record, the velocity of the Sea Falcon II 
seconds after firing the booster rocket was given by
?
ft/sec. Find the distance covered by the boat over the 10-second period after the booster rocket was activated.
Hint: The distance is given by 
.
?
A. 
ft
B. 
ft
C. 
ft
D. 
ft
Mathematics
Evaluate the function as indicated.Find f(-10) when f(x) = 8x + 13.
A. -78.7 B. 93 C. -67 D. -93
Mathematics