Divide.
A. 41
B. 42
C. 51
D. 52
Answer: C
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Find first four terms of the indicated expansion by use of the binomial series.
A. 1 + 
x - 
x2 + 
x3 - . . .
B. 1 + 
x + 
x2 + 
x3 + . . .
C. 1 + 
x - 
x2 + 
x3 - . . .
D. 1 + 
x - 
x2 + 
x3 - . . .
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
Simplify. Your answer should be in lowest terms.9
+ 13
+ 
A. 22
B. 23
C. 23
D. 24
A pair of similar triangles is shown. Find the measure of the segment marked with the letter x.
A. x = 12 B. x = 7 C. x = 21 D. x = 28