At 1pm the shadow of a tree is 14 ft long. at the same time the shadow of a telephone pole is 21 feet long. what is the height of the tree

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?

Table which ratio is equivalent to 3: 7? 6: 7 3: 21 24: 56 15: 30

Which of the following parabolas opens up?