Find the missing value for the radioactive isotope. (round your answer to two decimal places.)

isotope: 14c

half-life (in years): 5715

amount after 1000 years: 1 g

find the initial quantity

explain answers. i don't understand how to solve this.

1.1289 grams ( approx )

Step-by-step explanation:

Since, the final quantity of an element which has half life of n periods,

Where,

P = initial quantity,

t = total number of periods,

Here, A = 1 gram, t = 1000 years, n = 5715 years,

By substituting the values,

( using calculator )

Hence, the initial quantity would be 1.1289 grams ( approx )

3c+4

Step-by-step explanation:

When distributing a problem with 2 of the same signs, all you have to do is leave it the way it is. Basically pretend it's not there at all and you should the answer