alli38
alli38 alli38
  • 13-03-2017
  • Mathematics
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help with these two please or one??

help with these two please or one class=

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1100325342 1100325342
  • 15-03-2017
Anna learns in her science class that the human eye blinks an average of 4,200,000 times a year. What is this number expressed in scientific notation?
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