# User contributions

- 06:50, 24 February 2012
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**(+646)** . . N 2012 AMC 12B Problems/Problem 9 (Created page with "==Problem== It takes Clea 60 seconds to walk down an escalator when it is not moving, and 24 seconds when it is moving. How seconds would it take Clea to ride the escalator down...") - 21:38, 23 February 2012
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**(+1,084)** . . N 2012 AMC 12B Problems/Problem 15 (Created page with "==Problem== Jesse cuts a circular disk of radius 12, along 2 radii to form 2 sectors, one with a central angle of 120. He makes two circular cones using each sector to form the ...") - 21:26, 23 February 2012 (diff | hist) . . (+309) . . 2012 AMC 12B Problems/Problem 6 (→Problem)
- 21:22, 23 February 2012
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**(+812)** . . N 2012 AMC 12B Problems/Problem 13 (Created page with "==Problem== Two parabolas have equations y= x^2 + ax +b and y= x^2 + cx +d, where a, b, c, and d are integers, each chosen independently by rolling a fair six-sided die. What is...") - 20:45, 23 February 2012 (diff | hist) . . (+420) . . N 2012 AMC 12B Problems/Problem 11 (Created page with "==Problem== In the equation, 132 (base A) + 43 (base B) = 69 (base A+B), A and B are consecutive integers. What is A+B? ==Solution== Since they are 2 consecutive integers, w...")
- 20:39, 23 February 2012 (diff | hist) . . (+451) . . N 2012 AMC 12B Problems/Problem 10 (Created page with "==Problem== What is the area of the polygon whose vertices are the points of intersection of the curves x^2 + y^2 =25 and (x-4)^2 + 9y^2 = 81. ==Solution== The first curve i...")
- 20:31, 23 February 2012
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**(+602)** . . N 2012 AMC 12B Problems/Problem 5 (Created page with "==Problem== Two integers have a sum of 26. when two more integers are added to the first two, the sum is 41. Finally, when two more integers are added to the sum of the previous...") - 20:24, 23 February 2012 (diff | hist) . . (+356) . . N 2012 AMC 12B Problems/Problem 4 (Created page with "==Problem== Suppose that the euro is worth 1.3 dollars. If Diana has 500 dollars and Etienne has 400 euros, by what percent is the value of Etienne's money greater that the valu...")
- 20:20, 23 February 2012
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**(+516)** . . N 2012 AMC 12B Problems/Problem 3 (Created page with "==Problem== For a science project, Sammy observed a chipmunk and squirrel stashing acorns in holes. The chipmunk hid 3 acorns in each of the holes it dug. The squirrel hid 4 aco...") - 20:15, 23 February 2012 (diff | hist) . . (+94) . . 2012 AMC 12B Problems/Problem 2 (→Problem)