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Mathematics, 29.07.2019 23:30 lesleyy7278

A15-ft ladder is leaning against one wall of an alley 9 ft wide. the ladder slips, its top sliding down the wall, its foot sliding across the alley and striking the opposite wall at a speed of 4 ft/sec. how fast is the top of the ladder falling at that instance?

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A15-ft ladder is leaning against one wall of an alley 9 ft wide. the ladder slips, its top sliding d...
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