Answer:
Radioactive in half life is 51gram
Step-by-step explanation:
80grams:12years
X :7.6years
12x÷x=x
7.6×80÷12=51gram
Answer:
324352
Step-by-step explanation:
For this case we must simplify the following expression:

We have that by definition of properties of powers that is fulfilled:

Then, rewriting the expression:

Answer:

5a+5b because 6a-a=5a and 8b-3b=5b. 5a+5b.
It will take 4.75 days, or 4 and 3/4's of a day if that's what you're looking for