Therefore, the bones were 6612.5 years old at the time they were discovered.
Given that the radioactive element carbon-14 has a half-life of 5750 years, and a scientist determined that the bones from a mastodon had lost 57.5% of their carbon-14, to determine how old were the bones at the time they were discovered, the following calculation must be made:
Therefore, the bones were 6612.5 years old at the time they were discovered.
Learn more about half life in https://brainly.com/question/24710827
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