A rectangle ABCD is in scribed ina circle and E is a point on the circleference of the circle. Give that AE^2 +BE^2+ CE^2+DE^2 = 200and area of the ciccle is K pi; Find K.

Which of the following is not a challenge to instituting sound global environmental policies? a. most changes are inexpensive and easy to implement. b. elected leaders who support unpopular environmental issues often are not re-elected. c. economic considerations outweigh environmental ones in many societies. d. there is no way to enforce international environmental agreements.

The vegetation that thrives in the tundra is limited to a. mosses, barley, wheat, and corn. b. coniferous trees. c. dwarf shrubs, mosses, lichen, potatoes, and beans. d. mosses, lichen, algae, and dwarf shrubs.

At which boundary does subduction stop occurring, resulting in a mountain range?