Find the domain and the range for the function.

A. Domain: (-?, 0) ? (0, ?), Range: (-?, 0) ? (0, ?)
B. Domain: (0, ?), Range: [0, ?)
C. Domain: (-?, ?), Range: [4, ?)
D. Domain: (-?, 0), Range: (-?, 0)


Answer: C

Mathematics

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Write the complex number in trigonometric form. Begin by sketching the graph to help find the argument ?. ?

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A.
 
B.

C.
 
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Solve the problem.Two trains leave a train station at the same time. One travels east at 9 miles per hour. The other train travels west at 10 miles per hour. In how many hours will the two trains be 95 miles apart?

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Mathematics