Solve the problem.If 5 newborn babies are randomly selected, how many different gender sequences are possible?
A. 25
B. 32
C. 120
D. 10
Answer: B
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For an election with 6 candidates (A, B, C, D, E, and F), we have the following preference schedule:
Using the plurality-with-elimination method, the winner of the election is
A. A. B. B. C. C. D. E. E. none of these
Solve the system using the inverse of the coefficient matrix of the equivalent matrix equation. 7x - y + 9z = 70-5x - 2z = -30 6y + z = 23
A. (4, 5, 3) B. (-4, 3, 8) C. (4, 3, 5) D. No solution
Solve the problem.In a Psychology class, the students were tested at the end of the course on a final exam. Then they were retested with an equivalent test at subsequent time intervals. Their average scores after t months are given in the table.
Using a graphing utility, fit a logarithmic function y = a + b ln x to the data. Using the function you found, estimate how long will it take for the test scores to fall below 84%. Express your answer to the nearest month.
A. 20 months B. 8 months C. 10 months D. 12 months
Find the sum and simplify the answer.
A. 1
B. 
C. 
D. 1