- 1/2 (-3/2x + 6x +1) -3
1 answer:
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The formula for an infinite geometric sequence is the following:
Just substitute the values of
and r into the formula.
Therefore, the answer is 20.
Just substitute the values of
Therefore, the answer is 20.
Answer:
The volcanic eruption occurred 8,634.90 years ago.
Step-by-step explanation:
Formula used:
where,
= initial mass of isotope = x
N = mass of the parent isotope left after the time, (t) = 35% of x=0.35x
= half life of the isotope = 5700 year
= rate constant
Now put all the given values in this formula, we get
The volcanic eruption occurred 8,634.90 years ago.