olgamgarcia98 olgamgarcia98
  • 25-09-2020
  • Mathematics
contestada

Thirty percent of a radioactive substance decays in four years.
By what percent does the substance decay each year?

Respuesta :

aj993978
aj993978 aj993978
  • 25-09-2020

Answer:

The substance decays by 7.5% every year

Step-by-step explanation:

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