Simplify the expression.5x + 8x

A. 26x
B. 13x2
C. 40x
D. 13x

Answer: D

Mathematics

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Use a sum-to-product identity to rewrite the expression.cos  - cos 

A. -2sin  sin 
B. -2sin  cos  
C. -2cos  sin 
D. -2cos  cos 

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Find the prime factorization of the given composite number.112

A. 2 ? 2 ? 2 ? 7 ? 7 B. 2 ? 2 ? 2 ? 7 C. 2 ? 2 ? 2 ? 2 ? 7 D. 2 ? 2 ? 2 ? 2? 7 ? 7

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Solve the inequality. Express your answer using interval notation.|x + 8| ? 0

A. (-?, -8) B. {8} C. {-8} D. no solution

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