angelinamullins angelinamullins
  • 14-05-2015
  • History
contestada

Which innovation extended the number of hours in a day that Americans could work and play

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ryanwhite499ray
ryanwhite499ray ryanwhite499ray
  • 14-05-2015
Its 24 hours in a day. And what you need is 9 hours of sleep. Si if you try and find the equality what would your estimate be
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absolyoshi101
absolyoshi101 absolyoshi101
  • 28-02-2019

hello!

the answer is electricity  

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