Write a voter profile for the voting situation.Ten voters are asked to rank 4 brands of cell phones: A, B, C, and D. The ten voters turn in the following ballots showing their preferences in order: 
Write a voter profile for these ballots.
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Write an equivalent expression. Use an associative law.(x + 9) + y
A. y + (x + 9) B. x(9 + y) C. x + (9 + y) D. (9 + x) + y
Mathematics
Use Bayes' rule to find the indicated probability.The incidence of a certain disease on the island of Tukow is 4%. A new test has been developed to diagnose the disease. Using this test, 91% of those who have the disease test positive while 4% of those who do not have the disease test positive (false positive). If a person tests positive, what is the probability that he or she actually has the disease?
A. 0.438 B. 0.487 C. 0.91 D. 0.856
Mathematics
Simplify.
A. 
B. 
C. 
D. 
Mathematics
Find f"(x) for the function.f(x) = 5e-x2
A. 15xe-x2 + 10e-x2 B. 10x2 e-x2 C. 20x2 e-x2 + 5e-x2 D. 20x2 e-x2 - 10e-x2
Mathematics