Add. Simplify, if possible. + 

A.  
B. 9
C.  
D.  


Answer: A

Mathematics

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A. 8.49 in. B. 9 in. C. 18 in. D. 36 in.

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Use the graph to complete the identity. = ? 

A. sec x B. cos x C. csc x D. sin x

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Estimate the product by rounding as indicated.(64.73)(18.23); Round each factor to one nonzero digit.

A. 1200 B. 120 C. 2000 D. 1210

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