Solve the problem.A church steeple casts a shadow 109 ft long, and at the same time a 9.0-ft post cast a shadow 7.0 ft long. How high is the steeple? Round to the nearest unit.
A. 140 ft
B. 85 ft
C. 112 ft
D. 8 ft
Answer: A
Mathematics
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A. - 
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Find the product using the FOIL method.(y - 2)(y + 6)
A. y2 + 4y - 12 B. 2y - 12 C. y2 - 4y + 12 D. 2y2 + 12
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Find the indefinite integral.
?
?
A. 
B. 
C. 
D. 
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Suppose n(U) = 100, n(A) = 24, n(B) = 60, and n(A ? B) = 10. Find n(A' ? B').
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Mathematics