Out os 45 times at bat raul got 19 hits. find raul's batting average

Lisa has three classes that each last 50 minutes. what is the total number of minutes of the three classes

If a baby uses 15 diapers in 2 days, how many diapers will the baby use in a year?

Find the exact value of each of the following. in each case, show your work and explain the steps you take to find the value. (a) sin 17π/6 (b) tan 13π/4 (c) sec 11π/3