Tanya has 12 coins in half-dollars and quarters. Their total value is $4.75. How many coins are there of each type?

Little’s law firm has just one lawyer. customers arrive randomly at an average rate of 6 per 8 hour workday. service times have a mean of 50 minutes and a standard deviation of 20 minutes. how long does a customer spend at little’s law firm on average?

Astudent showed the steps below while solving the inequality |x-4|< 1 by graphing.

Compute the standard deviation of the following set of data to the nearest whole number. 10, 10, 15, 20, 25