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Mathematics, 19.11.2019 20:31 littlebirdd987

Arock, dropped into a well, falls 4 9/10 meters in the first second, and at every next second it falls 9 4/5 meters more than the preceding second. find the depth of the well if the rock touches the water in the well three seconds after it is dropped.

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Arock, dropped into a well, falls 4 9/10 meters in the first second, and at every next second it fal...

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