Someone and explain the first one so the half life of a radioactive kind of potassium is 12 hrs . how much will be left after 36 hrs, if you start with 64 grams of it? so i did a=64(1/2)^36 power is that the accurate form i need asap
btw this is exponential decay

you are saying it as if a fact, not a question, but yes, you would be correct? ; )

step-by-step explanation:

the simplified form is

step-by-step explanation:

we want to simplify the expression,

let us change the middle bar to a normal division sign to obtain,

we multiply the first fraction by the reciprocal of the second fraction to obtain,

we factor to obtain,

we cancel the common factors to get,

we simplify to get,

the correct answer is b