What is the remainder of 23870 divide by 38

Find the required measurements of the following trapezoids. a = 8 cm b = 16 cm h = 10 cm

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?

Can someone answer this question? : )