The half-life of carbon-14 is about 5730 years. (That's 5,730 ±40 years, if more accuracy is desired.) A link can be found below for more information about radiocarbon, which is what we commonly call carbon-14.
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It is 14/2
It is 14/2.
7
14
Nine fourteenths is equal to 0.64, i.e. more than half. THINK OF IT THIS WAY: 7/14 would be exactly half, correct? And 9/14 is more than 7/14! So 9/14 must be greater than half. Think of it this way too, get a calculator and divide nine by 14 and tell us all if the answer is bigger that zero point FIVE or 9/14 is bigger then a half because 7/14 is equal to a half and 9/14 is bigger then 7/14