Abottle contains 12 red marbles and 8 blue marbles. a marble is chosen at random and not
replaced. then, a second marble is chosen at random.
determine the probability that at least one of the marbles is red.

The map shows the location of the airport and a warehouse in a city. though not displayed on the map, there is also a factory 112 miles due north of the warehouse.a truck traveled from the warehouse to the airport and then to the factory. what is the total number of miles the truck traveled?