A bag with 6 marbles has 1 blue marble, 2 red marbles, and 3 yellow marbles. A marble is chosen from the bag at random. What is the probability that it is blue?

Two men, 400 feet apart, observe a balloon between them; it is in the same vertical plane as they are. the respective angles of elevation of the balloon are observed by the men to be 75°20' and 49°30'. find x rounded to the nearest whole number. 318 ft 339 ft 471 ft 504 ft