If the half-life is t, then every t days, the amount of the radioactive isotope will be cut in half.
(1/2)^(number of half-lives) = 3%
number of half-lives = ln(0.03) / ln(0.5)
This gives the number of half-lives as 5.06.
Then 300 days = (5.06)(length of 1 half-life)
length of 1 half-life = 300 / 5.06 = 59.29 days
You add up all of the sides
Answer:
{3x-2}+4=10
Step-by-step explanation:
The think the answer is D.
It has line symmetry and rotational symmetry, so A is the answer, hope this helps
