Mathematics, 16.02.2021 04:10 ushayuri
3) A sample of 42 grams of an unknown substance has a half-life of 1,300 years.
(a) Write an equation to determine the amount of substance, S, left after t years.
(b) Approximately how long will it take for 0.2 grams of substance to remain (to the nearest year)?
Answers: 2
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![\sqrt[1300]{(1-r)^{1300}} = \sqrt[1300]{0.5}](/tpl/images/1121/2043/a67a4.png)
. So
. So
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3) A sample of 42 grams of an unknown substance has a half-life of 1,300 years.
(a) Write an equati...
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