Exponents : choose the correct expanded form for (-3b)5 a. (-) (-) b. () b. (-3)5b^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?

10% of 1,900,000. show me how you got the answer

My hour hand points between the 8 and the 9 in 35 minutes it will be the next hour. what time is it ?