![2000000000000005](/avatars/20095.jpg)
2000000000000005
22.06.2019 •
Mathematics
Situation: find the age of the skull to the nearest year, enter the correct answer. a hiker in africa discovers a skull that contains 32% of its original amount of c- 14. done n = noekt 00000 no = inital amount of c-14 (at time t = 0) n = amount of c-14 at time t k = 0.0001 t = time, in years
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Ответ:
11,394 years old
Step-by-step explanation:
The equation looks like this:
The only thing left up to us is to decide what value should go in for N. Since we are told that 32% of the original amount is what the hiker finds, we are operating in percentages. Before any decomposition took place, the amount of skull was 100%. Filling in now we have:
Divide both sides by 32 to get
In order to get that t out of the exponential position that it is currently in, we will take the natural log of both sides, since a natural log "undoes" an e (that is because the base of a natural log is e). Taking the ln of both sides and utilizing that rule for natural logs and e's gives us:
ln(3.125) = .0001t
Divide both sides by .0001 to get that
t = 11,394 years
Ответ:
Same for me too
Step-by-step explanation: