Solve the system of equations. x - y + 4z = 14x + z = 0 x + 4y + z = -4
A. x = 0, y = -1, z = 1
B. x = 0, y = -1, z = 0
C. x = 0, y = 0, z = -1
D. Inconsistent
Answer: B
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Find the indicated probability.In a batch of 8000 clock radios 9% are defective. A sample of 8 clock radios is randomly selected without replacement from the 8,000 and tested. The entire batch will be rejected if at least one of those tested is defective. What is the probability that the entire batch will be rejected?
A. 0.530 B. 0.0900 C. 0.470 D. 0.125
Solve the problem.There are two types of tickets for a school play: child tickets that sell for 
each and adult tickets that sell for 
each. A total of 112 tickets are sold, bringing in a total of 
How many adult tickets are sold?
A. 79 B. 76 C. 73 D. 75
Simplify the algebraic expression.5x + 9y + 10 + 8x - 4y + 13
A. 18xy + 23 B. 13x + 13y + 23 C. 13x + 5y + 23 D. -3x + 13y + 23
Evaluate the definite integral.
A. 2.46 B. -2.54 C. 15 D. -2.5