Understanding Parabolas:
OfficialBubbleTanks ( a member here in Nov17) Made this interactive Desmos graph so that people can learn to understand parabolas better. This is a great tool I think :)
Thanks OBT :)
Post: https://web2.0calc.com/questions/parabola-helper
Or if you want to skip straight to the graher:
https://web2.0calc.com/questions/how-much-do-they-weigh (CPhill)
This is another problem from American puzzle-maker Sam Lloyd..........
Five little girls taken in couples weigh 129 pounds, 125 pounds, 124 pounds, 123 pounds, 122 pounds, 121 pounds, 120 pound, 118 pounds, 116 pounds and 114 pounds on a weighing machine.
What was the weight of each one of the five little girls if taken separately?
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