Write the expression as the sine, cosine, or tangent of an angle.cos  cos  + sin  sin 

A. sin 
B. sin 
C. cos 
D. cos 


Answer: D

Mathematics

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Solve the problem.A spring is depressed from its equilibrium position such that its equation of motion is  where y is the displacement, and   What must be the value of b if the motion is critically damped?

A. 3 B. 6 C. -6 D. -3

Mathematics

Solve the problem.Use the sequence of equations to find the unknown sum.1 = 11 - 4 = -31 - 4 + 9 = 6 . . . . . . . . 1 - 4 + 9 - . . . 81 = ?

A. -36 B. 27 C. -55 D. 45

Mathematics

The following spinner is used to play a board game. Expressing your answer as a fraction in simplest form, what is the probability that the spinner will land on the specified place?  Find the probability that the spinner points toward a number less than 9.

A. 0
B. 1
C.
D.

Mathematics

Find the domain and range of the function represented in the graph.

A. Domain: (-?, 3) or (3, ?); Range: (-?, 5) or (5, ?) B. Domain: (-?, ?); Range: (-?, 5] C. Domain: (-?, 3]; Range: (-?, 5] D. Domain: (-?, ?); Range: (-?, ?)

Mathematics