F(x)=tan(x) find the limit as x approaches pi/2 from the negative and positive sides then find the limit as x approaches 0. : (

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

If i have a 24 in loaf of bread and i cut it into two pieces one 9 in how long was the other

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?