Find the indicated matrix.Let A =  and B = . Find -2A + 4B.

A.
B.
C.
D.

Answer: C

Mathematics

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Sketch the angle in standard position.-    

A.

B.

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Write the number in trigonometric form. Let 0° ? ? < 360°.2 + 2i

A. 4(cos 60° + i sin 60°) B. 4(cos 330° + i sin 330°) C. 4(cos 150° + i sin 150°) D. 4(cos 30° + i sin 30°)

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Solve the system of equations using substitution.

A. x = 4, y = -3; x = 3, y = -4 B. x = -4, y = 3; x = -3, y = 4 C. x = 4, y = 3; x = 3, y = 4 D. x = -4, y = -3; x = -3, y = -4

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Find the mean. If necessary, round to one decimal place.3, 3, 19, 16, 17, 12, 16, 10

A. 12 B. 13 C. 11 D. 13.7

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Mathematics