In work with alternating current, complex numbers are used to describe current I, voltage E, and impedance Z. These three quantities are related by the equation E = IZ. Solve the equation E = IZ for the missing variable.I = 11 + 8i, Z = 9 + 2i
A. E = 115 + 94i
B. E = 99 + 110i
C. E = 99 + 16i
D. E = 83 + 94i
Answer: D
Mathematics
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Perform the indicated operation. Write the answer in lowest terms.
? 
A. 
B. 
C. 
D. 18
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Find the inverse of the relation.{(-9, 5), (-5, 9), (2, 2), (-2, -2)}
A. {(-2, 2), (2, -5), (5, -9), (2, -2)} B. {(-2, 2), (9, -5), (5, -5), (2, -2)} C. {(5, -9), (9, -5), (2, 2), (-2, -2)}
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Find the indicated nth term of the geometric sequence.
?
7th term : 
?
A. 
B. 
C. 
D. 
E. 
Mathematics
Perform the indicated operation.(7
+ 3
)(4
+ 6
)
A. 110 + 54
B. 2 + 54
C. 28
+ 18
+ 54
D. 28
+ 18
Mathematics