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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Evaluate the indicated double integral over R.
; R = {(x, y): 0 ? x ? 1, 0 ? y ? 1}
A. 
(e5 - e3 - e2 + 1)
B. 
(e5 - e3 - e2 - 1)
C. 
(e5 - e3 - e2 + 1)
D. 
(e5 - e3 - e2 - 1)
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Find the indicated term or coefficient of the binomial expansion.Find the coefficient of y4 in the expansion of (y + 5)9.
A. 393,750 B. 126 C. 78,750 D. 3125
Mathematics
Solve the equation.
= x + 6
A. 5 B. 7 C. -7 D. -6
Mathematics
Factor the square of the binomial.9p2 - 18pq + 9q2
A. (9p - q)2 B. 18(p - q)2 C. 9(p - q)2 D. 9(p - q)(p + q)
Mathematics