Nairplane, flying at an altitude of 15,000 feet above sea level, flies directly above a submarine that is traveling at a depth of 1,250 feet below sea level. what is the distance between the airplane and the submarine?

Which of the following statements best describes the spread of communism in the years immediately following world war ii? a. the number of communist countries increased during these years. b. the number of communist countries decreased during these years. c. the number of communist countries stayed the same during these years. d. the number of communist countries increased in asia but decreased in europe. ( answer in the format above for me to understand)

Which is likely the most serious problem associated with an epidemic? 1. there are sometimes no cures to the diseases that spread. 2. people often die from the diseases that spread. 3. there are usually no ways to prevent people from getting ill. 4. people often don’t know they have a disease.

Following archduke franz ferdinand's assassination, austro-hungarian leaders: a. aided the ottoman empire in its campaign to keep serbia under its control. b. executed nearly all prominent serbs living in austria-hungary c. threatened to invade serbia if serb leaders did not agree to a set of strict demands. d.. formed an alliance with great britain to protect austria-hungary from future attacks.