3 years ago

A sample of a radioactive isotope had an initial mass of 120 mg in the year

Mathematics

1 answer:

mina [271]3 years ago

5 0

Answer:

2015-2010=5

50÷5=10

120-50=70

2017-2015=2

2*10=20

70-20=50mg

2018=50mg

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