Identify which graph matches the equation.f(x) = x2 - 4
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Solve the problem.In the study of electrical circuits, the impedance of electron flow in an alternating-current (AC) circuit is expressed as a complex number. The total impedance in an AC circuit connected in series is the sum of the individual impedances. If the impedance in one part of the circuit is 
ohms and in another part is 
ohms, what is the total impedance in the circuit?
A. (-10 - 7i) ohms B. (-10 + 7i) ohms C. -10 ohms D. (-20 + 21i) ohms
Mathematics
Provide an appropriate response.Solve for x: log4 x = -3
Fill in the blank(s) with the appropriate word(s).
Mathematics
Identify the complex number as real or imaginary.? - 5
A. Imaginary B. Real
Mathematics
Divide.
A. 16 B. 15 C. 4 D. 1.5
Mathematics