A coin is "loaded" so that the probability of tossing a head is 
. If it is tossed 50 times, what are the mean and the standard deviation of the number of heads that occur?
?
A. 
?
B.
?
C.
?
D.
?
E.
Answer: C
Mathematics
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Simplify.
+ 
A. 
B. 
C. 
D. 
Mathematics
Solve the inequality. Graph the solution set and write it in interval notation.13x + 24 ? 5x + 96
A. (-?, 9]
B. (-?, -9]
C. (-9, ?)
D. [9, ?) 
Mathematics
Solve the problem.If y varies directly as x2 and inversely as m, and y = 4 when x = 5 and m = 2, find y when x = 10 and 
A. 0.67 B. 0.83 C. 5.33 D. 2.67
Mathematics
Find the coefficient of the given term in the binomial expansion.x6y4 term, (x + y)10
A. 210 B. 25,200 C. 6 D. 151,200
Mathematics