PLZ HELP PLZ

I just need the ratio

If 1 is divided by the sum of y& 4. the result is equal to 3 divided by 4 .find the value of m?

Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?

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?