A sample from a meteorite that landed on Earth has been analyzed, and the result shows that out of every 1,000 nuclei of potassium-40 originally in the meteorite, only 125 are still present, meani they have not yet decayed. How old is the meteorite (in yr)? (Hint: See the figure below.) (ote: The half-life of potassium-40 is 1.3 billion years.) Figure Graph Bar charts
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