Mathematics, 29.06.2019 04:30 MSSTEALYOGURL3757
The half life of pb-210 is 22 years. a decayed animal shows 16% of the original pb-210 remains; how long has the animal been deceased to the nearest tenth of a year? 58.2 years 58.0 years 0.1 years 0.12 years
Answers: 1
, where 
Original amount, 
Final amount after 
years and 
Half-life in years.
years. 
, then 
.
![log(0.16)=log[(\frac{1}{2})^\frac{t}{22}]\\ \\ log(0.16)=\frac{t}{22}log(\frac{1}{2})\\ \\ \frac{t}{22}=\frac{log(0.16)}{log(\frac{1}{2})}\\ \\ t= 22*\frac{log(0.16)}{log(\frac{1}{2})}=58.1648... \approx 58.2](/tpl/images/0029/7403/04549.png)
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The half life of pb-210 is 22 years. a decayed animal shows 16% of the original pb-210 remains; how...
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