Solve the quadratic equation by factoring.x2 - x = 42
A. {-6, -7}
B. {-6, 7}
C. {6, 7}
D. {1, 42}
Answer: B
Mathematics
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Solve the problem that involves probabilities with independent events.You are dealt one card from a 52-card deck. Then the card is replaced in the deck, the deck is shuffled, and you draw again. Find the probability of getting a picture card the first time and a spade the second time.
A. 
B. 
C. 
D. 
Mathematics
Determine if the given set of whole numbers is closed under multiplication.{1, 2, 3, 4, . . . }
A. Closed B. Not closed
Mathematics
Translate to an algebraic expression.Seventy-nine less than two times a number
A. 2 - 79x B. 79 - 2x C. 2x - 79 D. 79x - 2
Mathematics
Use a Venn diagram to find the indicated probability.Suppose P(B) = 0.35, P(C) = 0.47, and P(B ? C) = 0.27. Find P(B' ? C').
A. 0.73 B. 0.76 C. 0.28 D. 0.49
Mathematics