Divide.

A.  + i
B.  - i
C.  - i
D.  - i


Answer: B

Mathematics

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Solve the problem.The function  can be used to determine the milligrams D of a certain drug in a patient's bloodstream h hours after the drug has been given. How many milligrams (to two decimals) will be present after 

A. 0.07 mg B. 4.76 mg C. 972.08 mg D. 0.49 mg

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Add or subtract as indicated and write the result in standard form.-6 - (6 - 9i) - (3 - 2i)

A. -9 + 11i B. -9 - 11i C. -15 - 11i D. -15 + 11i

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Determine the amplitude or period as requested.Period of y = 4 cos x

A. 2?
B. ?
C.
D. 4

Mathematics

Find the sum.4 + 8 + 12 + . . . + 400

A. 20,200 B. 19,998 C. 40,400 D. 39,996

Mathematics