Write the system of linear equations represented by the augmented matrix. Use x, y, and z as the variables.
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Use the quadratic formula to solve the quadratic equation.5 - x2 = 8x
A. x = 4 + 
B. x = -4 ± 2
C. x = -4 ± 
D. x = -1 ± 
Mathematics
Find the multiplicative inverse of the number.
A. 1
B. -8
C. 8
D. - 
Mathematics
Evaluate the improper integral or state that it is divergent.
A. 0
B. 
C. - 
D. Divergent
Mathematics
Solve the problem.Mary finds 9 fish at a pet store that she would like to buy, but she can afford only 5 of them. In how many ways can she make her selection? How many ways can she make her selection if he decides that one of the fish is a must?
A. 3024; 1680 B. 126; 70 C. 7560; 840 D. 15,120; 1680
Mathematics