Use the Binomial Theorem to find the indicated coefficient or term.The 4th term in the expansion of (x + 3y)10

A. 3240x7y3
B. 3240x3y7
C. 1080x7y4
D. 1080x3y7


Answer: A

Mathematics

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Find the volume of the indicated region.the region in the first octant bounded by the coordinate planes and the surface 

A. 81
B.
C. 54
D.

Mathematics

Find the indicated probability or percentage for the normally distributed variable.A machine produces pencils with a mean diameter of 0.30 inches and a standard deviation of  The diameters are approximately normally distributed. What is the probability that a randomly selected pencil has a diameter less than 

A. 0.067 B. 0.099 C. 0.614 D. 0.215

Mathematics

Evaluate the limit based on the graph of f shown.f

A. ? B. -? C. -2 D. 0

Mathematics

The sequence is defined recursively. Write the first four terms.a1 = 135; an+1 =  (an)

A. a1 = 135, a2 = 45, a3 = 15, a4 = 5 B. a1 = 135, a2 = 405, a3 = 1215, a4 = 3645 C. a1 = 135, a2 = 67.5, a3 = 33.75, a4 = 16.875 D. a1 = 135, a2 = 105, a3 = 75, a4 = 45

Mathematics