Answer:
34 grams
Step-by-step explanation:
If the remaining sample has 30.26 grams of radioactive substance, and 11% of it decayed, that means that 30.26 grams is 89% of the original. Let the original be x.
30.26=0.89x
Multiply both by one hundred
3026=89x
Divide both by 89
34=x
x=original, so the original was 34 grams.
I believe the answer is 40000
The correct answer is 33 days
The answer to the question
Answer:
glassA=1/3×22/7×4²
=16.76
glass B=1/3×22/7×3²
=9.42
glass A is the correct answer
