Solve using Cramer's rule. 7a- 5c = -19-7a + 4b + 4c = 39-5a - 9b= -78
A. (3, -7, -8)
B. (4, 5, 8)
C. (7, 8, 7)
D. (3, 7, 8)
Answer: D
Mathematics
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Solve the system by the elimination method. x + 5y = -3 5x + 6y = -15
A. {(-2, -1)} B. {(-3, 0)} C. {(-2, -3)} D. ?
Mathematics
Find the probability of the following card hands from a 52-card deck. In poker, aces are either high or low. A bridge hand is made up of 13 cards.In bridge, 6 of one suit, 4 of another, and 3 of another
A. 0.0133 B. 0.0022 C. 0.00055 D. 0.0060
Mathematics
Factor completely. If unfactorable, indicate that the polynomial is prime.x2 - 6x + 36
A. prime B. (x + 6)(x - 6) C. (x - 6)2 D. (x + 6)2
Mathematics
Solve by the substitution method. If the system is inconsistent or dependent, say so.x + y = 8x + y = 7
A. (0, 15) B. (8, 7) C. (0, 0) D. Inconsistent
Mathematics