Mathematics, 22.06.2020 00:57 monayemcnett11

You find a rock containing a mixture of the element and lead. You determine that 30% of the original element remains; the other 70% decayed into lead. How old is the rock? Analysis of another rock shows that it contains 60% of its original element; the other 40% decayed into lead. How old is the rock?

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You find a rock containing a mixture of the element and lead. You determine that 30% of the original...

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