Answer:
B
Step-by-step explanation:
just because :)
Answer:
Hi I need to get another chance to go back to school subject1
Answer:
and 
Step-by-step explanation:
The equation of the isotope decay is:

14-Carbon has a half-life of 5568 years, the time constant of the isotope is:


The decay time is:
(There is no a year 0 in chronology).

Lastly, the relative amount is estimated by direct substitution:





Answer:
23m
Step-by-step explanation:
The product of a number m and the numeral 23 is 23m.