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April 24, 2014

Homework Help: precal

Posted by Student on Sunday, October 14, 2012 at 2:53am.

A pile driver pounds a steel column into the ground. On the first drive, the column is pounded 1.65 metres into the ground, and on each successive drive it moves 80% as far as it did on the previous drive. The least number of drives required to drive the column a total of 8.2 metres into the ground is _____.

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