9. A ship sails 20km due North. It changes direction and then sails 15km due East. How far is it from its starting point?

49xy +34y - 72z. determine the degree of the polynomial

You paint a 1/2 of a wall in 1/4 hour. how long will it take you to paint one wall

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?