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Mathematics, 19.12.2020 05:20 serverdang02
Element X is used to date fossils, and has a half life of 400 years. If a fossil with Element X in is found to be 1200 years old, how many half lives have gone by?
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Element X is used to date fossils, and has a half life of 400 years. If a fossil with Element X in i...
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