Solve the problem.A rectangular board is 8 feet by 18 feet. How far from the center of the board will the foci be located to determine the largest elliptical tabletop? Round your answer to the nearest tenth of a foot.
A. 5.0 ft
B. 4.0 ft
C. 0.9 ft
D. 8.1 ft
Answer: D
Mathematics
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Simplify. Assume that all variables represent positive numbers.
A. 
B. 
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Mathematics
Perform the indicated operation.-5 + (-10)
A. 5 B. -15 C. 15 D. -5
Mathematics
Find the quotient.- 
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A. - 
B. - 
C. - 
D. - 
Mathematics
From the given list, identify the improper fractions.
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A. 
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B. 
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C. 
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D. 
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, 
Mathematics