Answer:
- 32,283 years old
- 31,718 years old
Step-by-step explanation:
If h is the half-life of the radioactive substance, then the proportion remaining after t years is ...
k = (1/2)^(t/h)
We can find the value of t using logarithms:
log(k) = (t/h)·log(1/2)
t = h·log(k)/log(1/2)
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a) For k = 2% and h = 5720 years, we have ...
t = 5720·log(.02)/log(.5) ≈ 5720·5.64386
t ≈ 32,283 . . . . years old
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b) For k = 2% and h = 5620 years, we have ...
t ≈ 5620·5.64386 ≈ 31,718 . . . . years old
_____
Note the proportionality of age to half-life. Once we found the multiplier corresponding to 2% remaining, we can use that for any estimate of the half-life.
Answer:
x-intercept=(-1,0) y-intercept =(0,-3)
Step-by-step explanation:
The anser is 2 cuz i sad so, and i was droped don te stars as a lil kid ÆÆÆÆÆÆÆÆÆÆÆÆÆÆÆÆÆ
This is what it should look like. Compare it with yours and see where yours is wrong.
hope this helps!
Answer:
$0.50
Step-by-step explanation:
$2.50 equals 5, so divide $2.50 by 5 to get 1. $2.50 divided by 5 equals $0.50.
