Один острый угол прямоугольного треугольника равен 30". Найдите угол между высотой и биссектрисой, проведенными
из вершины прямого угла ​

What signals you that factoring by grouping is the best method to use when factoring a problem?

What is the average rate of change for this function for the interval from x=2 to x=4 ?

Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.1. (round your answers to four decimal places.) (a) if the distribution is normal, what is the probability that the sample mean hardness for a random sample of 8 pins is at least 51?