Lamina is a thin layer of material. A lamina may have any shape and any density distribution. The goal of this quiz is to find the center of mass of a triangular lamina with both uniform density and nonuniform density. You may refer to section 15.4 inyour textbook for examples.

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?