User contributions
- 20:43, 3 January 2012 (diff | hist) . . (+144) . . N 2011 AMC 8 Problems/Problem 13 (Created page with "The overlap length is 5, so the shaded area is 5 * 15 =75. The area of the whole shape is 25*15 = 375 The fraction 75/375 reduces to 1/5 or 20%.")
- 20:41, 3 January 2012 (diff | hist) . . (+100) . . N 2011 AMC 8 Problems/Problem 11 (Created page with "Average the differences between the two times. 10, -10, 20, 30, -20 The sum is 30. Divide by 5 = 6.")
- 20:40, 3 January 2012 (diff | hist) . . (+181) . . N 2011 AMC 8 Problems/Problem 9 (Created page with "Look at the possibilities. The list is short enough. 1+2 = 3 1+4 = 5 1+6 = 7 3+2 = 5 3+4 = 7 3+6 = 9 5+2 = 7 5+4 = 9 5+6 = 11 Possible outcomes: 3, 5, 7, 9, 11 for a total of 5.")
- 20:36, 3 January 2012 (diff | hist) . . (+394) . . N 2011 AMC 8 Problems/Problem 7 (Created page with "Assume that the area of each square is one. Then, the area of the shade region in the top left square is 1/4. The area of the top right shaded region is 1/8. The area of the b...")
