Solve the problem.Suppose you buy 1 ticket for $1 out of a lottery of 1000 tickets where the prize for the one winning ticket is to be $500. What are your expected winnings?
A. -$.50
B. $0
C. -$.40
D. -$1.00
Answer: A
Mathematics
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Solve using Cramer's rule. 3x - 5y - 2z = -15-2x + 6y - 2z = 20-4x - 4y + 8z = -28
A. (5, 3, 1) B. (4, -5, -1) C. (4, 5, 1) D. (5, 1, 5)
Mathematics
Evaluate the integral.
A. 
B. - 
C. 
D. 0
Mathematics
Decide whether the equation is an identity, a conditional equation, or a contradiction. Give the solution set.2(3x + 20) - 6x - 40 = 0
A. Conditional; {0} B. Identity; {all real numbers} C. Conditional; {3} D. Contradiction; ?
Mathematics
Multiply.(9m + 11)2
A. 81m2 + 121 B. 9m2 + 121 C. 81m2 + 198m + 121 D. 9m2 + 198m + 121
Mathematics