Answer:
The equation that describes the amount of mass left after a time t of a radioactive isotope is the following:
where
is the mass of the sample at t = 0
is the half-life of the sample
For the element X in this problem,
We want to find the time t at which
So we need to re-arrange the equation making t the subject:
Step-by-step explanation:
The domain of the function are all real numbers greater than 10
<h3>Domain of a function</h3>
Domain are values of the independent variables for which the function exist.
Given the function below;

For the function to exist, then;
-x^2+10x = 0
-x^2 = -10x
x = 10
Hence the domain of the function are all real numbers greater than 10
Learn more on domain here: brainly.com/question/26098895
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Answer:
42
Step-by-step explanation:
Answer:
4/6
Step-by-step explanation:
4/6 because if u simplify it would be 2/3 and 2/3 is 0.66666666. also 4/6 is 0.66666666