Each matrix is nonsingular. Find the inverse of the matrix. Be sure to check your answer.

A.

B.

C.

D.

Answer: A

Mathematics

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Subtract.5 - 16

A. -21 B. 21 C. 11 D. -11

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Solve the problem.1 + 4 + 42 + 43 + . . . + 4217 =

A.
B.
C.  - 1
D. 4218
E. none of these

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Use the fundamental identities to find the value of the trigonometric function.Find sec ? if cos ? =  and sin ? > 0.

A. 4
B. - 4
C.
D.

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Evaluate as requested.A graph of a function f is shown below. Find f(0).

A. -1.34 B. 4 C. 2.1 D. 1

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