Answer: 41.5 min
Step-by-step explanation:
This problem can be solved with the Radioactive Half Life Formula:
(1)
Where:
is the final amount of the radioactive element
is the initial amount of the radioactive element
is the time elapsed
is the half life of the radioactive element
So, we need to substitute the given values and find from (1):
(2)
(3)
(4)
Applying natural logarithm in both sides:
(5)
(6)
Clearing :
This is the time elapsed
Answer:
which statement is equivalent to the inequality 14x-14>-7x+7
x>21
x>1
x<
x=1which statement is equivalent to the inequality 14x-14>-7x+7
x>21
x>1
x<
x=1which statement is equivalent to the inequality 14x-14>-7x+7
x>21
x>1
x<
x=1which statement is equivalent to the inequality 14x-14>-7x+7
x>21
x>1
x<
x=1which statement is equivalent to the inequality 14x-14>-7x+7
x>21
x>1
x<
x=1which statement is equivalent to the inequality 14x-14>-7x+7
x>21
x>1
x<
x=1which statement is equivalent to the inequality 14x-14>-7x+7
x>21
x>1
x<
x=1
