A carpenter has 1350 nails. He uses 23% on a job and then uses 34% of the remaining nails at his second job. How many nails are left?

How can you construct perpendicular lines and prove theorems about perpendicular lines

Is (root2 -2)^2 rational or irrational. show the steps and answer fast

Assume that females have pulse rates that are normally distributed with a mean of mu equals 72.0 beats per minute and a standard deviation of sigma equals 12.5 beats per minute. complete parts (a) through (c) below. a. if 1 adult female is randomly selected, find the probability that her pulse rate is between 65 beats per minute and 79 beats per minute. the probability is? b. if 16 adult females are randomly selected, find the probability that they have pulse rates with a mean between 65 beats per minute and 79 beats per minute. the probability is? c. why can the normal distribution be used in part (b), even though the sample size does not exceed 30?