Elizabeth and David are arranging flowers in
vases for their teacher. The teacher has told
them 4/8 of the flowers in each vase must be
blue. Which fraction represents an equivalent
fraction that can be used to show how many blue-
flowers in each vase?
2/1
%
4/2
2/8

1. whats 2/3 plus 1/9 2. 5/7 plus 1/2 3.7/15 plus 2/15

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?

Me find the value of x each figure.