Answer:
8
Step-by-step explanation:
18-12
12-X
X=12*12/18
X=8mm
Answer:
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.
It’s the first one. I think
Answer:
.999...
Step-by-step explanation:
99>64 just put a decimal