Solve the problem.The formula 
is used in electrical engineering. The variables I, V, and Z are complex quantities. Find V for the given values of I and Z, and express the answer in standard form.
A. -45 - 108i
B. 108 - 45i
C. 108 + 45i
D. -45 + 108i
Answer: D
Mathematics
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Perform the indicated operation.
÷ 
A. - 
B. -
C. - 
D. - 
Mathematics
Find the period of the function y = 3 sec x.
(a) 2? (b) ? (c) 3? (d) ? / 3 (e) 2 /3
Mathematics
Find the domain and range of the inverse of the given function.f(x) = (9x - 2)3
A. Domain: [9, ?); range: [0, ?) B. Domain: [2, ?); range: [0, ?) C. Domain: [0, ?); range: all real numbers D. Domain and range: all real numbers
Mathematics
Factor the trinomial completely, or state that the trinomial is prime.5x2 + 6x - 8
A. (5x - 4)(x + 2) B. (5x - 2)(x + 4) C. (5x + 2)(x - 4) D. (5x + 4)(x - 2)
Mathematics