Use the product-to-sum or sum-to-product identities to find an identity for the given expression.8 sin 6? cos 13?

A. -4(sin 19? + sin 7?)
B. 4(sin 19? - sin 7?)
C. 4(cos 19? + sin 7?)
D. 4(sin 7? - cos 7?)

Answer: B

Mathematics

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Multiply.× 

A. 708.883 B. 708.993 C. 708.983 D. 708.994

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Simplify.

A.
B.
C.
D.

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Write the decimal as a fraction or mixed number in lowest terms.0.5

A.
B.
C.
D.

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Solve using the square root property.2k2 = 50

A. ± 
B. ±5
C. 625
D. ± 

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