Solve the problem.For two sections of a circuit connected in series, the voltage is given by V = V1 + V2 and impedance by Z = Z1 + Z2. The current is given by I = V/Z. Calculate the current if 120 V were applied across a circuit with an impedance of 6.0 + 5.9i ?.
A. 605.04 - 594.96i A
B. 720 + 708i A
C. 10.17 - 10.00i A
D. 10.17 + 10.00i A
Answer: C
Mathematics
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Use integration by parts to establish a reduction formula for the integral.
A. 
= 
+ 
B. 
= x(ln ax) n - n 
C. 
= ax(ln ax) n - an 
D. 
= 
- 
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Evaluate. Assume that all variables represent positive numbers. |-21|
A. 0 B. 42 C. 21 D. -21
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Find all values that make the rational expression undefined. If the rational expression is defined for all real numbers, so state.
A. x = 4, x = -4 B. x = 6, x = 2 C. x = -6, x = -2 D. x = 0
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Simplify the expression.z0 + 140
A. 0 B. z + 14 C. 2 D. 15
Mathematics