Solve the problem.If the voltage in an electric circuit is held constant, the current varies inversely as the resistance. If the current is 140 milliamperes (mA) when the resistance is 2 ohms, find the current when the resistance is 14 ohms.
A. 20 mA
B. 973 mA
C. 40 mA
D. 980 mA
Answer: A
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Determine the amplitude or period as requested.Amplitude of y = -5 sin 2x
A. 
B. 
C. 
D. 5
Solve.The inmedance Z in an alternating current circuit (like the one used in your home and in your classroom) is given by the formula Z = 
, where V is the voltage and I is the current. Find the value of Z if 
and 
A. -3 - 
i
B. 
+ 3i
C. 3 + 
i
D. - 
- 3i
Find the requested sum of the arithmetic sequence.
A. 6
B. 16
C. 
D. 46
Solve the problem.The height h of a ball thrown is given by 
, where x is the horizontal distance traveled and both measurements are in feet. At what horizontal distances will the height of the ball be more than 
(Round distances to the nearest tenth of a foot, if necessary.)
A. 0 ft < x < 5.9 ft or 19.1 ft < x < 25 ft B. 5.9 ft < x < 25 ft C. 0 ft < x < 19.1 ft D. 5.9 ft < x < 19.1 ft