Impedance is a measure of the opposition to the flow of current in an electrical circuit. It consists of two parts called resistance and reactance. Light bulbs add resistance to an electrical circuit, and reactance occurs when electricity passes through coils of a wire like those found in electric motors. Impedance Z in ohms (?) may be expressed as a complex number, where the real part represents the resistance and the imaginary part represents the reactance. Use this information to solve the problem.For two sections of a circuit connected in parallel, impedance is given by 
Calculate the impedance if 
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A. 0.82 - 0.87i ?
B. 1.63 - 1.73i ?
C. 1.23 - 1.31i ?
D. 0.381 - 0.407i ?
Answer: C
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Solve the problem.A baseball team played 165 complete games last season. They had 17 fewer wins than losses. How may games did the team win?
A. 91 games B. 165 games C. 17 games D. 74 games
Provide an appropriate response.A frustum of a pyramid has a square base that is 55 mm on each side, a square top that is 
on each side, and a height of 30 mm. Find the volume of the frustum.
What will be an ideal response?
Write the number in trigonometric form. Let 0° ? ? < 360°.4
A. 4(cos 90° + i sin 90°) B. 4(cos 0° + i sin 0°) C. 4(cos 270° + i sin 270°) D. 4(cos 180° + i sin 180°)
Find the average of the list of numbers.
and 
A. 
B. 
C. 
D. 