Find the term indicated in the expansion.(x - 3y)9; 6th term
A. -30,618x5y4
B. 10,206x5y4
C. 10,206x4y6
D. -30,618x4y5
Answer: D
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Solve the problem. Round results to an appropriate number of significant digits.From a boat on the river below a dam, the angle of elevation to the top of the dam is 23.7°. If the dam is 2755 ft above the level of the river, how far is the boat from the base of the dam?
A. 6260 ft B. 6280 ft C. 6270 ft D. 6250 ft
Find the root.
A. -3 B. Not real number C. 9 D. 3
Add or subtract. Write the answer in lowest terms.
+ 
- 
A. 
B. 
C. 
D. 
A company installs 5000 light bulbs, each with an average life of 500 hours, standard deviation of 100 hours, and distribution approximated by a normal curve. Find the approximate number of bulbs that can be expected to last the period of time.At least 500 hours
A. 5000 bulbs B. 2500 bulbs C. 2400 bulbs D. 1000 bulbs