Simplify the radical. Assume that all variables represent positive real numbers.
A. 
B. 3
C. 
D. 3
Answer: A
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The double integral gives the mass of a lamina R. Determine the density ?, the mass, and the center of mass.
A. k; 21k?; 
B. Density is proportional to distance from the origin; 21k?; 
C. k; 21k?; 
D. Density is proportional to distance from the origin; 21k?; 
Use the following table of values to estimate the value of 
at 
. Round your answer to two decimal places.
?
x 1 3 6 9
5 7 11 13?
A. 1.33
B. 4.00
C. 0
D. None of the above
Solve the problem.A 30-foot pole is supported by two wires that extend from the top of the pole to points that are each 15 feet from the base of the pole. Find the total length of the two wires.
A. 90 ft
B. 15
ft
C. 2250 ft
D. 30
ft
Solve the inequality.(x + 6)(x + 4) > 0
A. (-?, -6) B. (-6, -4) C. (-?, -6) or (-4, ?) D. (-4, ?)