Find the phase shift of the function.y = -4 cos (6x + ?)

A. 4? units to the right
B.  units to the left
C. 6? units to the right
D.  units to the left

Answer: B

Mathematics

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Simplify. Be sure to rationalize the denominator. Assume that all variables represent positive real numbers.

A. 7
B.
C.
D.

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Simplify. Include the absolute value symbol if necessary. If the answer is not a real number, state so.

A. |x| + 5 B. |x - 5| C. |x + 5| D. x + 5

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Evaluate the polynomial for the given values of the variables.Evaluate -x2y + 4xy2 - 5 for x = 4 and y = -4.

A. 315 B. 325 C. 197 D. 635

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Convert as indicated.4.4 g to kilograms

A. 440 kg B. 4400 kg C. 0.0044 kg D. 0.00044 kg

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