Find the indicated set.Let A = {2, 7, 9, 12, 15}, B = {3, 9, 15, 20}, and C = {4, 9, 12, 15}.Find 
A. {9, 15}
B. {9, 12, 15}
C. {2, 7, 9, 12, 15, 3, 9, 15, 20, 4, 9, 12, 15}
D. {2, 3, 4, 7, 9, 12, 15, 20}
Answer: D
Mathematics
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? 
A. x6y8
B. x6y7
C. x6y9
D. x6y8
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Solve for x.82.038x = 295.3368
A. 3.6 B. 3.7 C. 3.5 D. 4.6
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Solve the problem.The diagram below shows a rope connecting the top of a pole to the ground. The rope is 21 yd long and touches the ground 18 yd from the pole. How tall is the pole? Round approximations to the nearest tenth. 
18 yd
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Mathematics