Answer:
Step-by-step explanation:
its infinite solution
hope i was helpful
Answer:
15
Step-by-step explanation:
multiply both sides by 15
45x=675
Divide both sides by 45
x=15
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.
Answer: 1
Step-by-step explanation: can only be split evenly by one line.