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motikmotik
3 years ago
5

SOLVE WITH AN EXPLANATION PLS

Mathematics
2 answers:
Softa [21]3 years ago
5 0

Answer:

  • Option C
  • Option B

Step-by-step explanation:

<u>Let's simplify this further to get our answer.</u>

  • -5/6(12 - 6x + 18y)
  • => -60/6 + 30x/6 - 90y/6
  • => -10 + 5x - 15y

Looking at the options, we can say that Option C and B are correct.

Drupady [299]3 years ago
3 0

\\ \sf\longmapsto \dfrac{-5}{6}(12-6x+18y)

\\ \sf\longmapsto \dfrac{-5}{6}(12)-\dfrac{(-5)}{6}(6x)+\dfrac{-5}{6}(18y)

\\ \sf\longmapsto -5(2)-(-5x)+(-5)(3y)

\\ \sf\longmapsto -10+5x-15y

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Answer:

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a)

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In this case, since the decomposition time is exponentially distributed with a mean of 1/6, we have

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d)

\bf \lambda =5584

\bf P(X>t)=0.5\Rightarrow e^{-t/5584}=0.5\Rightarrow -t/5584=ln(0.5)\Rightarrow t=-5584ln(0.5)=3870.53\;years

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