10.2 hours is equivalent to three half-lives, so after 10.2 hours, the mass of the sample would have decayed by half three times over. If one starts with 100 mg of the sample, then after three half-lives, there would be 100(0.5)³ = 12.5 mg of the sample remaining.
Thus, the correct answer choice here would be D.
The year that tablet computers were introduced to the market is 2012
Layer C formed.
Layer B formed.
Layer A formed.
When layers A-B-C were present, intrusion D formed.
Intrusion D cut through layers A-C.
Fault E formed, shifting rocks A through C and intrusion D.
Answer:
Wait, i will answer this later
Explanation:
Wait for my idea okay?
