Answer:
0.86 x 0.24 = 0.2064
Step-by-step explanation:
(1/3)^4 = 1^4/ 3^4 = 1/81
Answer: 1/81
Answer: There will be 0.04 grams will be left in the sample after 20 years.
Step-by-step explanation:
Since we have given that

Here, Initial amount of radioactive substance = 400 grams
We need to find the amount of substance that will be left in the sample after 20 years.
So, t = 20 years
So, it becomes,

Hence, there will be 0.04 grams will be left in the sample after 20 years.
70-35 I believe that’s write
Answer:
Your answer 3.141416141
Step-by-step explanation:
Tell me if im wrong