Add and simplify.
A. 30
B. 9
C. 29
D. 28
Answer: C
Mathematics
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Evaluate the integral by using a substitution prior to integration by parts.
A. x cos (ln x) + sin (ln x)+ C
B. 
[cos (ln x) + sin (ln x)] + C
C. 
[cos (ln x) - sin (ln x)] + C
D. x[cos (ln x) + sin (ln x)] + C
Mathematics
Find the magnitude of the vector.
= 
A. 281
B. 
C. 
D. 
Mathematics
Point P sweeps out central angle ? as it rotates on a circle of radius r. Find the angular velocity of point P.
?
?
If the answer needs rounding, round it to three significant digits.
?
__________ rad/min
Fill in the blank(s) with the appropriate word(s).
Mathematics
Solve the problem.Suppose that the manufacturing cost of a precision instrument is approximated by 
where x is the cost of materials and y is the cost of labor. Find 
A. 100 B. 670 C. 284 D. 160
Mathematics