Pls help me! Directions: Find the rule for each sequence by defining tn. 11. 3, 4, 5, 6, ...

12. 1, 1/2, 1/3, 1/4, ...

13. 3, 9, 27, 81,...

14. 1, 4, 9, 16,...

15. 2, 4, 6, 8,...

Find the value of x that will make l ll m

You were told that the amount of time lapsed between consecutive trades on the new york stock exchange followed a normal distribution with a mean of 15 seconds. you were also told that the probability that the time lapsed between two consecutive trades to fall between 16 to 17 seconds was 13%. the probability that the time lapsed between two consecutive trades would fall below 13 seconds was 7%. what is the probability that the time lapsed between two consecutive trades will be between 14 and 15 seconds?

Cone a has a surface area of 384 ft2 and cone b has a surface area of 96 ft? . what is the ratio of their volume?