Mathematics: Achemist claims that he has found a chemical formula that will kill a certain bacteria. he claims it will kill half the bacteria in 40 seconds, and in the next 40 seconds kill half of the remaining half, and so on. if he is correct, and at a certain time there are 30 bacteria still alive, how many bacteria were alive 4 minutes earlier? explain clearly

Achemist claims that he has found a chemical formula

jazzhands16

29.05.2020

4 Minutes = 240 seconds = 6*40 seconds

30*(1/2)^6 = 30*1/64 = 30/64 = 15/32 = 0.5

4 minutes later there is approx. 0 to 1 bacteria alive.

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megaaan214p61pb7

18.02.2021

12 5/25 12*25=300 + 5 = 305 so 305/25 is ur mixed number

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