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abruzzese [7]
3 years ago
6

Write a function that gives the remaining amount of containments in kilograms, C(t), t hours after Nana started purifying the wa

ter
Mathematics
1 answer:
Nastasia [14]3 years ago
4 0

Answer:

C(t)= \frac{1}{2} kg (2/3) ^ t

Step-by-step explanation:

Original Question:

  • Nana has a water purifier that filters 1/3 of the contaminants each hour. She used it to purify water that had 1/2 kilogram of contaminants. Write a function that gives the remaining amount of contaminants in kilograms, C(t), t hours after Nana started purifying the water.

Explanation:

  • Each hour, the water purifier filters 1/3 of the contaminants, meaning that the contaminant reduces by 2/3. If the contaminant was 1kg (for example), the mass would be 2/3 kg after 1 hour- after 2 hours, it'll be 4/9 kg, so we see a pattern. We need to multiply the contaminant by 2/3 every single hour.
  • C(t)= \frac{1}{2} kg (2/3) ^ t
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