You have a sample that has a half-life of 17 years. 1/8 of the sample is the parent isotope. How old is the sample?

How much of the daughter isotope is left?
(not sure of subject sorry)

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a symbiotic relationship with the mitochondria

a researcher conducts an experiment on the secretion of a particular hormone in mice. scientists inject mice with a substance that stimulates the production of the hormone. the scientists then test the levels of hormones produced by the mice. the tool used to measure the hormones consistently detects the levels at 10 points lower than the actual hormone levels in the mice. this tool makes measurements, but the measurements aren't .

explanation:

no u