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snow_tiger [21]
3 years ago
6

A radioactive substance decays according to

Mathematics
1 answer:
irakobra [83]3 years ago
6 0

Answer:554.64 s

Step-by-step explanation:78/250= e^(-0.0021t)

0.312=e^(-0.0021t)

ln0.312= -0.0021t

t= 554.64 s

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3 years ago
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g100num [7]
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answer

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5 0
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melisa1 [442]

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6 0
3 years ago
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