A flag is posted on the top of a castle. A knight on the ground standing 30 m away from the castle notices that the angles of elevation of the top of the castle and the top of the flag are 30' and 45. respectively?

7friends share 4 pizzas equally how much pizza did each friend get

Ammonia molecules have three hydrogen atoms and one nitrogen atom.how many of each atom arein five molecules of ammonia

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?