User contributions
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- 05:12, 13 February 2009 (diff | hist) . . (+45) . . N 2009 AMC 10A Problems/Problem 13 (Redirecting to 2009 AMC 12A Problems/Problem 6) (current)
- 05:11, 13 February 2009 (diff | hist) . . (+151) . . m 2009 AMC 12A Problems/Problem 6
- 05:11, 13 February 2009 (diff | hist) . . (+200) . . 2009 AMC 10A Problems (→Problem 13)
- 05:10, 13 February 2009 (diff | hist) . . (+46) . . N 2009 AMC 10A Problems/Problem 12 (Redirecting to 2009 AMC 12A Problems/Problem 10) (current)
- 05:09, 13 February 2009 (diff | hist) . . (+152) . . m 2009 AMC 12A Problems/Problem 10
- 05:09, 13 February 2009 (diff | hist) . . (+561) . . 2009 AMC 10A Problems (→Problem 12)
- 05:08, 13 February 2009 (diff | hist) . . (+45) . . m 2009 AMC 12A Problems/Problem 2
- 05:08, 13 February 2009 (diff | hist) . . (+45) . . m 2009 AMC 12A Problems/Problem 4
- 05:07, 13 February 2009 (diff | hist) . . (+151) . . 2009 AMC 12A Problems/Problem 5
- 05:07, 13 February 2009 (diff | hist) . . (+45) . . N 2009 AMC 10A Problems/Problem 11 (Redirecting to 2009 AMC 12A Problems/Problem 5) (current)
- 05:07, 13 February 2009 (diff | hist) . . (+258) . . 2009 AMC 10A Problems (→Problem 11)
- 05:06, 13 February 2009 (diff | hist) . . (+45) . . N 2009 AMC 10A Problems/Problem 3 (Redirecting to 2009 AMC 12A Problems/Problem 2) (current)
- 05:06, 13 February 2009 (diff | hist) . . (+103) . . m 2009 AMC 12A Problems/Problem 2
- 05:04, 13 February 2009 (diff | hist) . . (+45) . . N 2009 AMC 10A Problems/Problem 2 (Redirecting to 2009 AMC 12A Problems/Problem 4) (current)
- 05:04, 13 February 2009 (diff | hist) . . (+103) . . 2009 AMC 12A Problems/Problem 4
- 05:00, 13 February 2009 (diff | hist) . . (+708) . . N 2009 AMC 10A Problems/Problem 9 (New page: == Problem == Positive integers <math>a</math>, <math>b</math>, and <math>2009</math>, with <math>a<b<2009</math>, form a geometric sequence with an integer ratio. What is <math>a</math>?...)
- 04:57, 13 February 2009 (diff | hist) . . (+14) . . m 2009 AMC 10A Problems (→Problem 8)
- 04:57, 13 February 2009 (diff | hist) . . (+696) . . m 2009 AMC 10A Problems/Problem 8
- 04:54, 13 February 2009 (diff | hist) . . (+2,688) . . 2009 AMC 10A Problems
- 04:46, 13 February 2009 (diff | hist) . . (+571) . . N 2009 AMC 12A Problems/Problem 2 (New page: == Problem == Which of the following is equal to <math>1 + \frac {1}{1 + \frac {1}{1 + 1}}</math>? <math>\textbf{(A)}\ \frac {5}{4} \qquad \textbf{(B)}\ \frac {3}{2} \qquad \textbf{(C)}\ ...)
- 04:44, 13 February 2009 (diff | hist) . . (+1,001) . . N 2009 AMC 12A Problems/Problem 3 (New page: == Problem == What number is one third of the way from <math>\frac14</math> to <math>\frac34</math>? <math>\textbf{(A)}\ \frac {1}{3} \qquad \textbf{(B)}\ \frac {5}{12} \qquad \textbf{(C)...)
- 04:39, 13 February 2009 (diff | hist) . . (+1,068) . . N 2009 AMC 12A Problems/Problem 4 (New page: == Problem == Four coins are picked out of a piggy bank that contains a collection of pennies, nickels, dimes, and quarters. Which of the following could <em>not</em> be the total value of...)
- 04:33, 13 February 2009 (diff | hist) . . (+2) . . m 2009 AMC 12A Problems (→Problem 4)
- 17:00, 12 February 2009 (diff | hist) . . (+1,046) . . N 2009 AMC 12A Problems/Problem 9 (New page: == Problem == Suppose that <math>f(x+3)=3x^2 + 7x + 4</math> and <math>f(x)=ax^2 + bx + c</math>. What is <math>a+b+c</math>? <math>\textbf{(A)}\ -1 \qquad \textbf{(B)}\ 0 \qquad \textbf...)
- 16:49, 12 February 2009 (diff | hist) . . (+236) . . 2009 AMC 12A Problems (→Problem 9)
- 16:45, 12 February 2009 (diff | hist) . . (+811) . . N 2009 AMC 12A Problems/Problem 7 (New page: == Problem == The first three terms of an arithmetic sequence are <math>2x - 3</math>, <math>5x - 11</math>, and <math>3x + 1</math> respectively. The <math>n</math>th term of the sequence...)
- 16:35, 12 February 2009 (diff | hist) . . (+909) . . N 2009 AMC 12A Problems/Problem 5 (New page: == Problem == One dimension of a cube is increased by <math>1</math>, another is decreased by <math>1</math>, and the third is left unchanged. The volume of the new rectangular solid is <m...)
- 16:29, 12 February 2009 (diff | hist) . . (+535) . . N 2009 AMC 12A Problems/Problem 6 (New page: == Problem == Suppose that <math>P = 2^m</math> and <math>Q = 3^n</math>. Which of the following is equal to <math>12^{mn}</math> for every pair of integers <math>(m,n)</math>? <math>\tex...)
- 16:27, 12 February 2009 (diff | hist) . . (+1,057) . . N 2009 AMC 12A Problems/Problem 8 (New page: == Problem == Four congruent rectangles are placed as shown. The area of the outer square is <math>4</math> times that of the inner square. What is the ratio of the length of the longer si...)
- 16:22, 12 February 2009 (diff | hist) . . (+1,067) . . N 2009 AMC 12A Problems/Problem 10 (New page: == Problem == In quadrilateral <math>ABCD</math>, <math>AB = 5</math>, <math>BC = 17</math>, <math>CD = 5</math>, <math>DA = 9</math>, and <math>BD</math> is an integer. What is <math>BD</...)
- 16:16, 12 February 2009 (diff | hist) . . (+1,404) . . N 2009 AMC 12A Problems/Problem 12 (New page: == Problem == How many positive integers less than <math>1000</math> are <math>6</math> times the sum of their digits? <math>\textbf{(A)}\ 0 \qquad \textbf{(B)}\ 1 \qquad \textbf{(C)}\ 2 ...)
- 16:05, 12 February 2009 (diff | hist) . . (+3,831) . . N 2009 AMC 12A Problems/Problem 13 (New page: == Problem == A ship sails <math>10</math> miles in a straight line from <math>A</math> to <math>B</math>, turns through an angle between <math>45^{\circ}</math> and <math>60^{\circ}</math...)
- 15:31, 12 February 2009 (diff | hist) . . (-7) . . m 2009 AMC 12A Problems (→Problem 13)
- 15:26, 12 February 2009 (diff | hist) . . (+2,808) . . N 2009 AMC 12A Problems/Problem 14 (New page: == Problem == A triangle has vertices <math>(0,0)</math>, <math>(1,1)</math>, and <math>(6m,0)</math>, and the line <math>y = mx</math> divides the triangle into two triangles of equal ar...)
- 14:03, 12 February 2009 (diff | hist) . . (+66) . . m 2009 AMC 12A Problems/Problem 11 (→Solution 2)
- 09:50, 12 February 2009 (diff | hist) . . (+3,035) . . N 2009 AMC 12A Problems/Problem 11 (New page: == Problem == The figures <math>F_1</math>, <math>F_2</math>, <math>F_3</math>, and <math>F_4</math> shown are the first in a sequence of figures. For <math>n\ge3</math>, <math>F_n</math> ...)
- 08:03, 12 February 2009 (diff | hist) . . (+2,098) . . N 2009 AMC 12A Problems/Problem 15 (New page: == Problem == For what value of <math>n</math> is <math>i + 2i^2 + 3i^3 + \cdots + ni^n = 48 + 49i</math>? Note: here <math>i = \sqrt { - 1}</math>. <math>\textbf{(A)}\ 24 \qquad \textbf...)
- 07:46, 12 February 2009 (diff | hist) . . (+1,704) . . N 2009 AMC 12A Problems/Problem 16 (New page: == Problem == A circle with center <math>C</math> is tangent to the positive <math>x</math> and <math>y</math>-axes and externally tangent to the circle centered at <math>(3,0)</math> with...)
- 06:58, 12 February 2009 (diff | hist) . . (+1,153) . . N 2009 AMC 12A Problems/Problem 17 (New page: == Problem == Let <math>a + ar_1 + ar_1^2 + ar_1^3 + \cdots</math> and <math>a + ar_2 + ar_2^2 + ar_2^3 + \cdots</math> be two different infinite geometric series of positive numbers with ...)
- 06:53, 12 February 2009 (diff | hist) . . (+1,519) . . N 2009 AMC 12A Problems/Problem 19 (New page: == Problem == Andrea inscribed a circle inside a regular pentagon, circumscribed a circle around the pentagon, and calculated the area of the region between the two circles. Bethany did t...)
- 06:40, 12 February 2009 (diff | hist) . . (+1,517) . . N 2009 AMC 12A Problems/Problem 18 (New page: == Problem == For <math>k > 0</math>, let <math>I_k = 10\ldots 064</math>, where there are <math>k</math> zeros between the <math>1</math> and the <math>6</math>. Let <math>N(k)</math> be...)
- 06:24, 12 February 2009 (diff | hist) . . (+4,236) . . 2006 AMC 12B Problems/Problem 22
- 18:12, 11 February 2009 (diff | hist) . . (+1,664) . . 2006 AMC 12B Problems/Problem 20
- 17:43, 11 February 2009 (diff | hist) . . (+1,095) . . 2006 AMC 12B Problems/Problem 17
- 17:30, 11 February 2009 (diff | hist) . . (+1,013) . . 2006 AMC 12B Problems/Problem 18
- 16:56, 11 February 2009 (diff | hist) . . (-140) . . m 2006 AMC 12B Problems (→Problem 14)
- 16:30, 11 February 2009 (diff | hist) . . (+4,456) . . 2006 AMC 12B Problems (three geometry problems still missing (got no pics for them))
- 15:48, 11 February 2009 (diff | hist) . . (+1,583) . . 2008 AMC 10B Problems/Problem 14
- 15:27, 11 February 2009 (diff | hist) . . (+219) . . 2008 AMC 10B Problems/Problem 19 (→Problem)
- 15:26, 11 February 2009 (diff | hist) . . (+206) . . 2008 AMC 10B Problems (→Problem 19)
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