A parallel circuit has R = 3 Kê and L = 1.6 mH. What is Z when f = 90 KHz?

a. 905 ê + j300 Kê
b. 250 ê + j830 ê
c. 3 Kê + j3 Kê
d. 905 ê - j900 ê
e. 3 Kê + j3.9 ê

b. 250 ê + j830 ê

Mathematics

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Find the inverse of the one-to-one function.f(x) = 

A. f-1(x) = 4x
B. f-1(x) = 
C. f-1(x) = x4
D. f-1(x) = 

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Mathematics

Solve the system by graphing. Check the coordinates of the intersection point in both equations.y = -x - 52y - 5x = 4

A. {(0, -5)} B. {(-1, -1)} C. {(0, 2)} D. {(-2, -3)}

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Mathematics

Express as a single logarithm and, if possible, simplify.logax + loga y

A.  loga xy
B. loga (x2/7 y1/5)
C. loga (x2/7 + y1/5)
D. loga (xy2/35)

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Mathematics

Answer the question.Find cos ? given that sin =  and 0 ? ? < .

A.
B.
C.
D.

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Mathematics