Match the given function to its graph.1) y = -2 sin (x)2) y = -2 sin (x)3) y = -2 cos (x)4) y = -2 cos (x)A)B)?

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



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

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

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

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

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Answer: A

Mathematics

A card is drawn randomly from a standard 52-card deck. Find the probability of the specified event. The card is a 2, 3, or 7.

A.  
B.  
C.
D.  

Find the magnitude and direction angle (to the nearest tenth) for each vector. Give the measure of the direction angle as an angle in [0,360°].

A. 8; 150° B. 4; 150° C. 4; 330° D. 8; 30°

Find the magnitude  and direction angle ?, to the nearest tenth of a degree, for the given vector v. v = -5i + 12j

A. 13; 67.4° B. 13; 112.6° C. 15; 112.6° D. 13; 157.4°

Solve the rational inequality and graph the solution set on a real number line. Express the solution set in interval notation. > 0

A. (-3, 0]

B. (0, ?)

C. (-?, -3) or (0, ?)

D. (-?, -3] or [0, ?)