Solve.The inmedance Z in an alternating current circuit (like the one used in your home and in your classroom) is given by the formula Z = 
, where V is the voltage and I is the current. Find the value of Z if 
and 
A. 5 + 3i
B. - 3 + 5i
C. 3 - 5i
D. -5 - 3i
Answer: A
Mathematics
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Find the greatest common factor of the terms.315(x - 6)3, 63(x - 6)6
A. 315(x - 6)6 B. 9(x - 6) C. 63(x - 6)3 D. 75(x - 6)3
Mathematics
Reduce the rational expression to lowest terms.
A. y2 - 16
B. y2 + 4y + 16
C. 
D. 
Mathematics
Solve.An expression important in the study of electrical fields is 
, where V represents voltage and i represents current. Assume that the voltage equals (a2 - b2) and that the current equals (a + b), where a and b are constants. Write the expression 
in simplified form.
A. a - b
B. ab
C. a + b
D. 
Mathematics
Round to the specified place.8.4458 hundredths
A. 8.445 B. 8.45 C. 8.446 D. 8.46
Mathematics