Solve.One piece of lumber is 77 inches long, while another is only 47 inches long. What is the difference between these two lengths?
A. 124 in.
B. 30 in.
C. 20 in.
D. 114 in.
Answer: B
Mathematics
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A. 
B. 
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Find the exact value of the expression.cos 
cos 
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sin 
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Estimate the value of the following limit by graphing the function 
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