Solve the problem.Two sound waves, producing the pressures 
and 
combine on a person's ear drum to produce the pressure 
Find the amplitude and phase shift for the total pressure.
A. A = 5, ? = 0.6435
B. A = 2.2, ? = 0.9273
C. A = 5, ? = 1010.8083
D. A = 2.2, ? = 1010.8083
Answer: A
Mathematics
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A. -2460 B. -732 C. 69 D. 240
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A. Domain: [9, ?); range: [0, ?) B. Domain: [2, ?); range: [0, ?) C. Domain: [0, ?); range: all real numbers D. Domain and range: all real numbers
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Determine whether the proportion is true or false.
= 
A. True B. False
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