Evaluate the expression.-y0 when y ? 0

A. -y
B. 0
C. 1
D. -1

Answer: D

Mathematics

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A. cos(69°) B. sin(21°) C. -cos(69°) D. cos(-69°)

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Simplify by factoring out the given factor.15s1/7 - 7s-3/7; s-3/7

A. s1/3(15 - 7s4/7) B. s1/7(15s4/7 - 74/7) C. s-3/7(15s4/7 - 7s) D. s-3/7(15s4/7 - 7)

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Find the reciprocal or multiplicative inverse.

A. 0.2
B. -0.2
C.
D. no reciprocal

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Solve , if possible. Write the answer in set notation. 

A.
B.
C.
D.
E. no solution

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