At lake middle school, the average ratio of boys to girls in a classroom is 3: 2. use a proportion to predict the number of girls in a classroom that has 15 boys

The number of potato chips in a bag is normally distributed with a mean of 71 and a standard deviation of 2. approximately what percent of bags contain between 69 and 73 potato chips? approximately 68% approximately 71% approximately 95% approximately 99.7%

Find the area of the unshaded square

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?