Solve the problem.In an ac circuit with two parallel pathways, the total impedance Z, in ohms, satisfies the formula 
, where Z1 is the impedance of the first pathway and Z2 is the impedance of the second pathway. Determine the total impedance if the impedances of the two pathways are 
and 
A. 
ohms
B. 
+ 
i ohms
C. 
ohms
D. 
+ 
i ohms
Answer: D
Mathematics
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and the Banzhaf definition of power. (The four players are P1, P2, P3, and P4.)The weight of the coalition {P2, P3, P4} is
A. 57. B. 60. C. 28. D. 25. E. none of these
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Solve the equation.36t3 - 64t = 0
A. 0
B. - 
, 
C. - 
, 
, 0
D. 
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Find the inverse of the function.{(0, 3), (-2, 4), (-4, 5), (-6, 6)}
A. 
B. {(4, 3), (3, -4), (0, -2), (4, 5)}
C. {(3, 0), (4, -2), (5, -4), (6, -6)}
D. {(4, 3), (6, -4), (0, -4), (4, 5)}
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Solve the problem. Round your answer to three decimals.What annual rate of interest is required to triple an investment in 4 years?
A. 31.607% B. 27.465% C. 18.921% D. 15.804%
Mathematics