Solve the problem.If the switch is thrown open after the current in an RL circuit has built up to its steady-state value, the decaying current obeys the equation 
How long after the switch is thrown open will it take the current to fall to 
of its original value?
A. -4.60 L/R seconds
B. -4.40 L/R seconds
C. 1.81 L/R seconds
D. 1.61 L/R seconds
Answer: D
Mathematics
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Use the Change-of-Base Formula and a calculator to evaluate the logarithm. Round your answer to two decimal places.log
125.7
A. 0.19 B. 2.70 C. 0.39 D. 5.40
Mathematics
Perform the indicated operation.-99 ÷ (-9)
A. 
B. -11
C. 11
D. 1
Mathematics
Solve the system of equations by graphing. If the system is inconsistent or the equations are dependent, say so.2x + y = 11 x + 6y = 11
A. {(5, 4)} B. {(5, 1)} C. {(6, -1)} D. {(-5, 1)}
Mathematics
Solve the problem.Scrambled Electronics will finance a $238 TV set for $50 down and $36.81 a month for 6 months. How much money can you save by paying cash for the TV set?
A. $32.86 B. $67.14 C. $17.14 D. $270.86
Mathematics