How much of a radioactive kind of calcium will be left after 10 days if the half-life is 5 days
and you start with 64 grams?
me !

16 g

Step-by-step explanation:

We can solve this with the Radioactive Half Life Formula:

Where:

is the final amount of radioactive calcium

is the initial amount of radioactive calcium

is the time elapsed

is the half life of radioactive calcium

Solving with the given data:

 This is the amount of radioactive calcium left

ruth is 6 years old

step-by-step explanation:

6 + 24 = 30,   so 6/30 = .2  

if you do 1/5 it also equals .2, so that is the answer.