Samuel loves to go on long walks. He decided to go on a very long walk this morning. He walked 2 miles east and 4 miles north. S
amuel took out his phone to brag about his long walk but he didn’t know how far he was from his starting point! Can you help Samuel find out how far he is?
1 answer:
You might be interested in
Step-by-step explanation:
The answer is mentioned above.
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