The radioactive element carbon 14 has a half life of 5750 years. A scientist determined that the bones from a mastodon had lose 75.3% of their carbon 14. How old were the bones at the time they were discovered
2 answers:
Answer:
To find the sales tax multiply the purchase price by the sales tax rate. Remember to convert the sales tax rate from a percent to a decimal number. Once the sales tax is calculated, it is added to the purchase price. The result is the total cost—this is what the customer pays.
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Answer:
Step-by-step explanation:
<u>Given</u>
Half life = 5750 Let the initial amount = c Final amount = c- 0.753c = 0.247c Time = t <u>The equation</u>
0.247c = c(1/2)^(t/5750) 0.247 = (1/2)^(t/5750) log 0.247 = log (1/2)^(t/5750) t/5750 = log 0.247 / log 0.5 t/ 5750 = 2.017
t = 5750*2.017
t = 11600 (rounded)
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