Simplify. Assume that all variables are nonnegative.
A. 3xy
B. 6xy
C. 6xy
D. 6xy
Answer: C
Mathematics
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What is the minimum value of
?
Consider only positive x-values.
A. 
B. 
C. 
D. There is no solution.
Mathematics
Evaluate the integral in terms of natural logarithms.
A. 7 ln (4 + 
)
B. 4
C. ln (4 + 
)
D. 7 ln (1 + 
)
Mathematics
Graph the parabola or ellipse. Include the directrix that corresponds to the focus at the origin.r = 
A. 
B. 
C. 
D. 
Mathematics
Find the average value of the function f over the given region.f(x, y) = 5x + 9y; R = {(x, y): 0 ? x ? 8, 0 ? y ? 7}
A. 
B. 20
C. 
D. 
Mathematics