andreal7915
26.11.2019 •
Mathematics
If an animal dies, what percent of the carbon-14 will be left in 2 years?
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Ответ:
8.898% will remain after 20000 years.
Step-by-step explanation:
First week need to know the half-life of carbon-14.
In this case it's 5,730 years.
There are calculators available online. (I'm too lazy to run through the equation.) 8.898% will remain after 20000 years.
Ответ:
Suppose that Judy completes exercises on Monday. Since she doubles the amount of exercises every day, she will complete exercises on Tuesday, exercises on Wednesday, exercises on Thrursday and exercises on Friday.
So, she completed exercises.
She still has 7 problems left, which means that she did problems so far.
So, we have
Here's the number of exercises per day: