An engineer is drawing a scale drawing of a 4 meter tall boiler. If the scale is 1cm = 2m, how many centimeters tall should it be in the drawing?
cm

On a string instrument, the length of a string varies inversely as the frequency of its vibrations. an 11-inch string has a frequency of 400 cylces per second. find the frequency of a 10-icnch string.

Reagan lives five miles farther from school than vanessa lives. write an expression to describe how far reagan lives from school

The patient recovery time from a particular surgical procedure is normally distributed with a mean of 5.2 days and a standard deviation of 1.7 days. what is the probability of spending more than 2 days in recovery? (round your answer to four decimal places.)