Solve the problem.A pendulum bob swings through an arc 40 inches long on its first swing. Each swing thereafter, it swings only 60% as far as on the previous swing. How far will it swing altogether before coming to a complete stop?
A. 67 inches
B. 133 inches
C. 50 inches
D. 100 inches
Answer: D
Mathematics
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C. 2 cos 2x
D. 2 cos 2x cos 
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Write the fraction that is represented by the given shading.
A. 
B. 
C. 
D. 
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Simplify.
A. 
B. -1
C. 
D. 
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Perform the indicated computation. Write the answer in scientific notation.(6 × 108)(4.2 × 104)
A. 2.52 × 1032 B. 2.52 × 1013 C. 25.2 × 1013 D. 252 × 1012
Mathematics