Use Cramer's rule to solve the system. If D = 0, use another method to complete the solution.-5x - 8z = -93-8x + 2y + 3z = -40-5x - 5y = -80
A. {(9, -7, -6)}
B. {(7, 6, 7)}
C. ({10, 5, 6)}
D. {(9, 7, 6)}
Answer: D
Mathematics
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Solve the problem.A course meets 5 times a week. One student misses class 3 days apart. A second student misses class 7 days apart. They were both absent on the second day of class. What is the next class day when both will be absent again?
A. class 22 B. class 23 C. class 21 D. class 10
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Determine whether f and g are inverses by determining whether 
and 
f(x) = 6x, g(x) = 
A. Yes B. No
Mathematics
Add or subtract as indicated. Write your answer in the form a + bi.(2 - 4i) + (9 + 2i)
A. -11 + 2i B. 11 - 2i C. 11 + 2i D. -7 + 6i
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Find the domain of the function.f(x) = 
A. (-?, 1) ? (1, ?) B. (-?, -1) ? (-1, 1) ? (1, ?) C. (-?, ?) D. (1, ?)
Mathematics