Find the value of the determinant. 

A. 4
B. 8
C. 64
D. -8

Answer: B

Mathematics

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Use properties to perform the calculations. Express answer in simplest form. ? 

A.
B.
C. - 5
D.

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Solve the problem.The product of a number and 9 less than the number is -20. What is the number?

A. 5 or 6 B. 4 or 5 C. -5 or -4 D. -6 or -5

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Combine the following, if possible.-27 - 13

A. 14ab
B. -40
C. -14
D. -14ab

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Solve the problem.Find the nth term of the following geometric sequence:9, 9, 18, 18, . . .

A. 9()n-1
B. 9()n
C. 9 ? 2n
D. 9(2)n-1

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Mathematics