# User contributions

- 01:02, 12 March 2012 (diff | hist) . . (+44) . . 2004 AMC 8 Problems (→Problem 9)
- 01:02, 12 March 2012
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**(+741)** . . N 2004 AMC 8 Problems/Problem 9 (Created page with "== Problem == The average of the five numbers in a list is <math>54</math>. The average of the first two numbers is <math>48</math>. What is the average of the last three numbers...") - 00:53, 12 March 2012 (diff | hist) . . (+44) . . 2004 AMC 8 Problems (→Problem 8)
- 00:52, 12 March 2012 (diff | hist) . . (+368) . . N 2004 AMC 8 Problems/Problem 8 (Created page with "== Problem == Find the number of two-digit positive integers whose digits total <math>7</math>. <math> \mathrm{(A)\ 6 }\qquad\mathrm{(B)\ 7 }\qquad\mathrm{(C)\ 8 }\qquad\mathrm{...")
- 00:49, 12 March 2012 (diff | hist) . . (+44) . . 2004 AMC 8 Problems (→Problem 7)
- 00:48, 12 March 2012
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**(+662)** . . N 2004 AMC 8 Problems/Problem 7 (Created page with "== Problem == An athlete's target heart rate, in beats per minute, is <math>80\%</math> of the theoretical maximum heart rate. The maximum heart rate is found by subtracting the ...") - 00:44, 12 March 2012 (diff | hist) . . (+44) . . 2004 AMC 8 Problems (→Problem 6)
- 00:42, 12 March 2012
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**(+610)** . . N 2004 AMC 8 Problems/Problem 6 (Created page with "== Problem == After Sally takes <math>20</math> shots, she has made <math>55\%</math> of her shots. After she takes <math>5</math> more shots, she raises her percentage to <math>...") - 00:37, 12 March 2012 (diff | hist) . . (+44) . . 2004 AMC 8 Problems (→Problem 5)
- 00:36, 12 March 2012
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**(+545)** . . N 2004 AMC 8 Problems/Problem 5 (Created page with "== Problem == The losing team of each game is eliminated from the tournament. If sixteen teams compete, how many games will be played to determine the winner? <math> \textbf{(A)...") - 00:32, 12 March 2012 (diff | hist) . . (+44) . . 2004 AMC 8 Problems (→Problem 4)
- 00:31, 12 March 2012 (diff | hist) . . (+476) . . N 2004 AMC 8 Problems/Problem 4 (Created page with "== Problem == Ms. Hamilton’s eighth-grade class wants to participate in the annual three-person-team basketball tournament. Lance, Sally, Joy, and Fred are chosen for the team...")
- 00:23, 12 March 2012 (diff | hist) . . (+44) . . 2004 AMC 8 Problems (→Problem 3)
- 00:22, 12 March 2012
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**(+636)** . . N 2004 AMC 8 Problems/Problem 3 (Created page with "== Problem == Twelve friends met for dinner at Oscar's Overstuffed Oyster House, and each ordered one meal. The portions were so large, there was enough food for <math>18</math> ...") - 23:21, 11 March 2012 (diff | hist) . . (+44) . . 2004 AMC 8 Problems (→Problem 2)
- 23:20, 11 March 2012
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**(+647)** . . N 2004 AMC 8 Problems/Problem 2 (Created page with "== Problem == How many different four-digit numbers can be formed be rearranging the four digits in <math>2004</math>? <math> \textbf{(A)}\ 4\qquad\textbf{(B)}\ 6\qquad\textbf{(...") - 23:11, 11 March 2012 (diff | hist) . . (+44) . . 2004 AMC 8 Problems (→Problem 1)
- 23:04, 11 March 2012 (diff | hist) . . (+480) . . N 2004 AMC 8 Problems/Problem 1 (Created page with "== Problem == Ona map, a <math>12</math>-centimeter length represents <math>72</math> kilometers. How many kilometers does a <math>17</math>-centimeter length represent? <math> ...")
- 20:36, 11 March 2012 (diff | hist) . . (+17) . . 2010 AMC 8 Problems/Problem 11 (→Solution)
- 20:33, 11 March 2012
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**(+657)** . . N 2010 AMC 8 Problems/Problem 11 (Created page with "== Problem == The top of one tree is <math>16</math> feet higher than the top of another tree. The heights of the two trees are in the ratio <math>3:4</math>. In feet, how tall i...") - 13:43, 11 March 2012 (diff | hist) . . (+6) . . 2010 AMC 8 Problems/Problem 19 (→Solution)
- 13:39, 11 March 2012
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**(+1,356)** . . N 2010 AMC 8 Problems/Problem 19 (Created page with "== Problem == The two circles pictured have the same center <math>C</math>. Chord <math>\overline{AD}</math> is tangent to the inner circle at <math>B</math>, <math>AC</math> is ...") - 13:25, 11 March 2012 (diff | hist) . . (-1) . . 2003 AMC 8 Problems/Problem 21
- 13:22, 11 March 2012 (diff | hist) . . (+346) . . 2003 AMC 8 Problems/Problem 21
- 13:21, 11 March 2012 (diff | hist) . . (+219) . . 2003 AMC 8 Problems/Problem 21
- 12:33, 11 March 2012 (diff | hist) . . (+136) . . 2010 AMC 8 Problems/Problem 16
- 03:00, 11 March 2012 (diff | hist) . . (+323) . . N 2010 AMC 8 Problems/Problem 16 (Created page with "== Solution == Let the side length of the square be <math>s</math>, and let the radius of the circle be <math>r</math>. Thus we have <math>s^2=r^2\pi</math>. Dividing each side b...")
- 03:50, 11 March 2012 (diff | hist) . . (+15) . . 2003 AMC 8 Problems/Problem 21
- 03:37, 11 March 2012
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**(+585)** . . N 2003 AMC 8 Problems/Problem 21 (Created page with "Using the formula for the area of a trapezoid, we have <math>164=8(\frac{BC+AD}{2})</math>. Thus <math>BC+AD=41</math>. Drop perpendiculars from <math>B</math> to <math>AD</math>...") - 14:34, 25 February 2012 (diff | hist) . . (-1) . . m 2012 AMC 12B Problems (→Problem 12)
- 01:19, 20 June 2011 (diff | hist) . . (+185) . . N 2000 AMC 8 Problems/Problem 16 (Created page with "The length of the rectangle is 1000/25=40 meters. The perimeter equals 1000/10=100 meters. Perimeter is 2L+2W. Solving for W, we get 10 inches. The area is 40*10=400 square meter...")
- 01:15, 20 June 2011 (diff | hist) . . (+260) . . N 2000 AMC 8 Problems/Problem 14 (Created page with "Even powers of 19 have a units digit of 1, and odd powers of 19 have a units digit of 9. So, 19^19 has a units digit of 9. Powers of 99 have the exact same property, so 99^99 als...")
- 01:10, 20 June 2011 (diff | hist) . . (+203) . . N 2000 AMC 8 Problems/Problem 10 (Created page with "Shea grows 20%, so she was originally 60/1.2=50 inches tall which is a 10 inch increase. Since Ara grew half as much as Shea, Ara grew 5 inches therefore Ara is now 50+5=55 inche...")
- 01:02, 20 June 2011 (diff | hist) . . (+162) . . N 1999 AMC 8 Problems/Problem 7 (Created page with "The distance between the two exits is 160-40=120. 120*(3/4)=90, so the exit is 90 miles away from the third exit or at the 40+90=130 milepost, so the answer is E.")
- 23:41, 19 June 2011 (diff | hist) . . (+189) . . N 1992 AJHSME Problems/Problem 8 (Created page with "1500*0.1=150, so the store owner is <math>150 below profit. Therefore he needs to sell 150+100=</math>250 worth of pencils. Selling them at $0.25 each gives 250/0.25=1000 which i...")
- 23:06, 19 June 2011 (diff | hist) . . (+216) . . N 1996 AJHSME Problems/Problem 3 (Created page with "Obviously 1 is in the top left corner, 8 is in the top right corner, and 64 is in the bottom right corner. To find the bottom left corner, take away 7 from 64 which is 57. Adding...")
- 23:00, 19 June 2011 (diff | hist) . . (+330) . . N 1996 AJHSME Problems/Problem 12 (Created page with "Adding all of the numbers gives us (11)(12/2)=66. Since there are 11 numbers, the average is 66/11=6. We need to take away a number from the total sum and then divide the result ...")