A variable x has a binomial distribution with probability of success 0.65 for each trial. For a total of 50 trials, what are the mean and the standard deviation of the distribution?
?
A. 
?
B.
?
C.
?
D.
?
E.
?
Answer: D
Mathematics
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Determine the principal value without using a calculator.3
A. 3 B. Not real number C. 9 D. 5
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Find the adjusted gross income.Nancy earned $18,575 in salary, $1,084 in unemployment compensation, and $74 in dividends. She contributed $871 to her Individual Retirement Account.
A. $18,862 B. $19,733 C. $20,604 D. $18,788
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Use the row transformation described to transform the matrix.
A. 
B. 
C. 
D. 
Mathematics
Find the center (h, k) and radius r of the circle. Graph the circle.x2 + y2 + 8x + 6y + 16 = 0 
A. (h, k) = (-4, -3); r = 3
B. (h, k) = (-4, 3); r = 3
C. (h, k) = (4, 3); r = 3
D. (h, k) = (4, -3); r = 3
Mathematics