there are 19 girls and 5 boys. What is the probability of selecting a boy? Give your answer in its simplest form.

An automated water dispenser fills packets with one liter of water on average, with a standard deviation of 5 milliliter. the manual says that after a year of operation the dispenser should be tested to see if it needs recalibration. a year later a number of filled packets are set aside and measured separately. it is found that the average packet now contains about 0.995 liters. does the dispenser need calibration? explain your answer.

Find the ratios of the corresponding sides

Which of the following shows the length of the third side, in inches, of the triangle below