Find the exact value of the expression.cos 40° cos 20° - sin 40° sin 20°

A.
B.
C.
D.

Answer: D

Mathematics

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Provide an appropriate response.There are 6 women and 5 men on a committee. What is the ratio of the women to men?

A.
B.
C.
D.

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Add or subtract as indicated. + 

A.
B.
C. - 
D. - 

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Mathematics

Find the effective rate of interest.9% compounded continuously

A. 9.451% B. 9.374% C. 9.089% D. 9.417%

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Mathematics

Solve the inequality, giving its solution set in both interval and graph forms.- 0.2x ? - 0.2

A. (-?, 0]

B. [0, ?)

C. [1, ?)

D. (-?, 1]

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Mathematics