What is the probility of drawing two blue marbles if the first one is placed back into the bag

Find the value of tan theta if sin theta = 12/13 and theta is in quadrant 2

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?

Find two numbers if their sum is 91 and the ratio is 6: 7?