How do you find the angle between two vectors?

The annual snowfall in a town has a mean of 38 inches and a standard deviation of 10 inches. last year there were 63 inches of snow. find the number of standard deviations from the mean that is, rounded to two decimal places. 0.44 standard deviations below the mean 2.50 standard deviations below the mean 0.44 standard deviations above the mean 2.50 standard deviations above the mean

15m is what percent of 60m; 3m; 30m; 1.5 km? the last one is km not m

The girls used two different recipes for making apple pies. dinas pie baked for 2/3 hour. vals pie baked for 0.75 hour. whos pie had the longer bsking time?