Answer:
Step-by-step explanation:
a3 = 2
d = -5
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a4 = a3 - 5
a4 = 2 - 5
a4 = - 3
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a5 = a4 - 5
a5 = -3 - 5
a5 = - 8
Just take a4 as your answer.
What is this supposed to be ?
U do 5 times 30 and get 150 then take 15 times 50 and get 750 last take 750 plus 150 and u get 900 cm
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
I think the answer is option e mn
