John can produce 20 shoes or 200 shirts. Mike can produce 100 shoes or 200 shirts. What is John's opportunity cost for 1 shoe in terms of shirts given up?

Erugent which russian tsar defeat napoleon and saw himself as the leader of european monarchs who opposed revolutionary change ivan the terrible ivan the great nicholas 1 alexander 1

Soon-yi's house has a hexagonal window made up of six identical equilateral triangles as pictured below.

President of the united states has scheduled a cabinet meeting today to discuss energy policy with specific focus on pollution and global warming. given what you know of the executive branch, which group of attendees would the president most likely expect to provide up-to-date information and expert insight during this meeting?