2 2/5 as an improper fraction

What is the value with a place of tenths in 907.456 1) 0 2) 6 3) 4 4) 5

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?

What are the coordinates of the point that is 1/3 of the way from a to b? a (2,-3) b (2,6)