Match the given function to its graph.1) y = 2 sin2) y = 2 sin3) y = 2 cos4) y = 2 cosA)B)?

height="200" width="200" />C)D)?



A. 1B, 2D, 3A, 4C

B. 1C, 2A, 3D, 4B

C. 1A, 2C, 3D, 4B

D. 1A, 2C, 3B, 4D

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Answer: A

Mathematics

Factor out a factor with a negative coefficient.-15u4 - 10u3 + 25u

A. -5u(3u3 - 2u2 + 5) B. -5u(3u3 + 2u2 - 5) C. 5u(-3u3 + 2u2 + 5) D. None of these

Simplify the expression.

A. -49 B. 49 C. 7 D. -7

Solve the problem.The batting averages of some of the players on the company softball team are       and 

src="https://sciemce.com/media/4/ppg__tttt0623191458__f1q48g7.jpg" alt="" style="vertical-align: -4.0px;" /> What is the mean of the batting averages of these players? Round to the nearest thousandth. A. 0.288 B. 0.321 C. 0.275 D. 0.250

Express the number in scientific notation.65,000

A. 6.5 × 105 B. 6.5 × 104 C. 6.5 × 10-4   D. 6.5 × 10-5