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vesna_86 [32]
3 years ago
9

Heights in inches of several tomato plants : 16,18,18,20,17,10,18,17 mean absolute deviation :

Mathematics
1 answer:
AysviL [449]3 years ago
7 0
18 would have to be the mean because of the average
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a 23 gram sample of a substance thats a by-product of fireworks has a K-value of .13. whats the substances half life in days
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Given:
Initial mass, m₀ = 23 g
Decay constant, k = 0.13

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m(t)=m_{0} e^{-kt}
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For half life, the mass is m = m₀/2.
Therefore
e^{-0.13t} = \frac{1}{2} \\ -0.13t = ln(0.5)\\t= \frac{ln(0.5)}{-0.13} =5.33

Answer: The half life is 5.33 days
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