32/36 can be simplified twice into 16/18, and then into 8/9.
Step-by-step explanation:
A 1 / A 2 = B2 / B1
4 / A 2 = - 72 / 9
A 2 = - I / 2
Answer:
4
Step-by-step explanation:
44 yeah yeah what about the other
Answer: C. 13,839 (the answer is not among the given options, however the result is near this value)
Step-by-step explanation:
The exponential decay model for Carbon-
14 is given by the followig formula:
(1)
Where:
is the final amount of Carbon-
14
is the initial amount of Carbon-
14
is the time elapsed (the value we want to find)
On the other hand, we are told the current amount of Carbon-14 is , assuming the initial amount of Carbon-14 is :
(2)
This means: (2)
Now,finding from (1):
(3)
Applying natural logarithm on both sides:
(4)
(5)
(6)
Finally:
This is the age of the paintings and the option that is nearest to this value is C. 13839 years