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anyanavicka [17]
3 years ago
11

A lake was closed because of an accidental pesticide spill. The concentration of the pesticide after the spill was 848 parts per

million. Each day the water is tested, and the amount of pesticide is found to be about 75% of what was there the day before. Do you think the lake will ever be completely free of the pesticide? Explain.
Mathematics
2 answers:
e-lub [12.9K]3 years ago
8 0
Hence lake will never be free of pesticides
DochEvi [55]3 years ago
5 0

Answer:

Step-by-step explanation:

a_{n}=a_{1}r^{n-1}\\0=848(0.75)^{n-1}\\or~(0.75)^{n-1}=0\\0.75

or~n \rightarrow 1+\infty\\or~n \rightarrow \infty

Hence lake will never be free of pesticide.

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