Solve the problem. Assume all numbers are approximate unless otherwise stated or the number has been determined by a definition or counting process.The capacitance of a certain element in an electric circuit (in ?F) was determined by calculating the value of 
Calculate this capacitance.
A. 8.0 ?F
B. 7.3 ?F
C. 7.7 ?F
D. 7.5 ?F
Answer: C
Mathematics
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Shade the portion of the diagram that represents the given set.(A ? B) ? 
A. 
B. 
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Solve the equation for all values 0 ? x ? 2?.tan 2x - tan x = 0
A. x = 
, 
B. x = 0, ?, 2?
C. x = 0
D. x = 
, 
, 
, 
, 
, 
, 
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Tell whether the graph of the function opens up or down.P(x) = -x2 + 4
A. down B. up
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Name the quadrant in which the angle ? lies.tan ? > 0, sin ? < 0
A. I B. II C. III D. IV
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