SOLUTION: our hearts beat approximately 70 times per minute. Express in scientific notation how many times the heart beatsover a lifetime of 80 years. Round the decimal factor in your scie

Question 596531: our hearts beat approximately 70 times per minute. Express in scientific notation how many times the heart beatsover a lifetime of 80 years. Round the decimal factor in your scientific notation to two decimal places.
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
In terms of units:
( beats/minute) x ( minutes/hour) x ( hours/day ) x ( days/year ) x ( years/lifetime ) = beats/lifetime

rounded off:

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