Solve the equation for solutions in the interval [0, 2?).sec 
= cos 
A. 
B. 
C. 
D. {0}
Answer: D
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Solve the system. If the system has infinitely many solutions, write the solution set with x arbitrary. x + y - 2z - 8 = 03x + z + 6 = 02x - y + 3z + 14 = 0
A. {(x, 7x + 4, -3x - 6)} B. {(x, 7x - 4, -3x - 6)} C. {(x, -7x + 4, -3x - 6)} D. {(x, -7x - 4, -3x - 6)}
Find an equation of the line.
A. y = -2x - 
B. y = 
x - 2
C. y = - 
x - 2
D. y = - 
x - 2
Use Bayes' rule to find the indicated probability.The incidence of a certain disease on the island of Tukow is 4%. A new test has been developed to diagnose the disease. Using this test, 91% of those who have the disease test positive while 4% of those who do not have the disease test positive (false positive). If a person tests positive, what is the probability that he or she actually has the disease?
A. 0.438 B. 0.487 C. 0.91 D. 0.856
Two linear functions, y1 and y2, are graphed with their point of intersection indicated. Give the solution set of 
A. 
B. 
C. 
D. 