Rita's mother is 4 times as old as she is. her grandmother is twice as old as her mother. if the sum of their age is 194, how old are rita, her mother, and her grandmother?

In a school 2/3 of the students study a language of those who study a language 2/5 study french

How do you create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1?

Over the course of the school year, you keep track of how much snow falls on a given day and whether it was a snow day. your data indicates that of twenty-one days with less than three inches of snow, five were snow days, while of the eight days with more than three inches of snow, six were snow days. if all you know about a day is that it is snowing, what is the probability that it will be a snow day?