Use Cramer's rule to solve the linear system.3x + 3z = 425x + 6y + 4z = 709x - 2y = 70
A. (8, 1, 6)
B. (8, -1, -6)
C. (1, 6, 1)
D. (9, -1, 6)
Answer: A
Mathematics
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Find the limit of the sequence if it converges; otherwise indicate divergence.an = 
8/n
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Solve the problem.Suppose you buy 1 ticket for $1 out of a lottery of 1,000 tickets where the prize for the one winning ticket is to be $500. What is your expected net winnings?
A. -$1.00 B. $0.00 C. -$0.40 D. -$0.50
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Evaluate the definite integral.
A. 2
- 6
B. - 2
+ 6
C. 
- 3
D. 
- 
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Solve the problem.You invest $3000 and after one year it has grown to $3200. What is the APY on your investment?
A. 1.6% B. 0.7% C. 6.7% D. 6.55% E. none of these
Mathematics