Rationalize the numerator of each fraction.
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Solve the problem by integration.Find the x-coordinate of the centroid of the area bounded by 
and 
A. 1.36 B. 5.43 C. 1.69 D. -1.69
Mathematics
Solve the problem.Between 7:00 AM and 8:00 AM, trains arrive at a subway station at a rate of 10 trains per hour 
per minute). The following formula from statistics can be used to determine the probability that a train will arrive within t minutes of 7:00 AM. F(t) = 1 - e-0.17tDetermine how many minutes are needed for the probability to reach 60%.
A. 2.02 min B. 5.25 min C. 7.34 min D. 5.39 min
Mathematics
Identify the element specified for the matrix.
a33
A. -3 B. 9 C. 5 D. -9
Mathematics
Find the trigonometric function value of angle ?.csc ? = - 
and ? in quadrant IIIFind cot ?.
A. - 
B. - 
C. 
D. - 
Mathematics