In triangle ABC , AB = 13 , BC = 14 and CA = 15 Distinct points. D, E and F lie on segments BC, CA and DE respectively such that 4D perp BC,Dl 1 AC and AF perp BF. The length of segments DF can be written as m/n Where m and n are relatively prime positive integers. Find the value of is m + n ?
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Glaciers are melting, sea levels are rising, cloud forests are dying, and wildlife is scrambling to keep pace. It has become clear that humans have caused most of the past century's warming by releasing heat-trapping gases as we power our modern lives. Called greenhouse gases, their levels are higher now than at any time in the last 800,000 years.
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The beggar (his name was Lushkoff) gives reason to Sergei (an advocate) for his telling lies that nobody give him anything if he tells the truths. So he tells lies to get some money as help
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