Use the decibel scale to answer the question.What is the loudness, in decibels, of a sound 33 trillion times as loud as the softest audible sound?
A. 162 dB
B. 108 dB
C. 189 dB
D. 135 dB
Answer: D
Mathematics
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Provide an appropriate response. Given sets U = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9}, A = {1, 2, 3, 4, 5}, B = {2, 4, 6, 8}, C = {5, 6, 7, 8, 9}, find A ? B ? C'.
A. {0, 1, 2, 3, 4, 5, 6, 8, 9} B. { } C. {2, 4, 5, 6, 7, 8, 9} D. {0, 1, 2, 3, 4, 5, 6, 8}
Mathematics
Compare the integers. Insert < or > to make the statement true.10 
A. < B. >
Mathematics
Solve the equation.16 = b2/5
A. {-4, 4} B. {4} C. {-1024, 1024} D. {1024}
Mathematics
Solve the problem.A satellite dish has a parabolic cross section and is 10 ft deep. The focus is 16 ft from the vertex. Find the width of the satellite dish at the opening. Round your answer to the nearest foot.
A. 53 ft B. 55 ft C. 59 ft D. 51 ft
Mathematics