Find the expected value.A fair coin is tossed three times, and a player wins $3 if 3 tails occur, wins $2 if 2 tails occur and loses $3 if no tails occur. If one tail occurs, no one wins. What is the expected value of the games?
A. $0.75
B. $2.00
C. -$3.00
D. $3.00
Answer: A
Mathematics
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A. 
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C. 
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Find the nth term of the given infinite series for which 
7 + 
+ 
+ 
+ ...
A. 
2
B. 
C. 
D. 
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Solve.The period of vibration P for a pendulum varies directly as the square root of the length L. If the period of vibration is 
when the length is 
what is the period when 
A. 1.0 s B. 4.8 s C. 1.4 s D. 5.0 s
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Solve the problem.Wind speed varies in the first twenty meters above the ground. For a particular day, let 
compute the wind speed 
above the ground. What is the wind speed 
above the ground? Round your result to the nearest hundredth.
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Mathematics