Solve the problem.Find the current I when the impedance is Z = -7 - 2j and voltage is V = 2j. (Z = 
)
A. - 1 + 
j
B. - 
- 
j
C. 4 - 14j
D. - 
- 
j
Answer: B
Mathematics
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Find the sum ? + ? or the difference ? - ? as indicated.Find ? + ?.? = 235°51', ? = 299°58'
A. 535°109' B. 535°49' C. 50°49' D. 50°109'
Mathematics
Evaluate. Round dollar amounts to the nearest cent and other answers to the nearest thousandth when necessary.P
kn for P = $480, n = 3, r = 5%, k = 4
A. $77.16 B. $557.16 C. $555.66 D. $550.28
Mathematics
Find the product or quotient.
? 
÷ 
A. 
B. 
C. 
D. 
Mathematics
Simplify the expression. Assume all variables represent positive real numbers.-
A. 2x3 B. -2x C. 2x D. not a real number
Mathematics