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
Answer:
go on PH release sum stress
Step-by-step explanation:
Answer:
120 grams because 120 kilograms is a lot
:)
Answer:
W = 7
Step-by-step explanation:
Answer:
(- 1, 1 )
Step-by-step explanation:
Given the 2 equations
- 4x + 5y = 1 → (1)
4x + 4y = 8 → (2)
Adding (1) and (2) term by term will eliminate the term in x
9y = 9 ( divide both sides by 9 )
y = 1
Substitute y = 1 into either (1) or (2) for corresponding value of x
Substituting in (1)
4x + 5(1) = 1, that is
4x + 5 = 1 ( subtract 5 from both sides )
4x = - 4 ( divide both sides by 4 )
x = - 1
Solution is (- 1, 1 )