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katrin [286]
2 years ago
7

If 8 g of a radioactive substance are present initially and 2 yr later only 4 g remain, how much of the substance will be presen

t after 5 yrs?
Mathematics
1 answer:
My name is Ann [436]2 years ago
7 0

Answer:

none

Step-by-step explanation:

8-4=4

if every 2 years, 4 gallons disappear

then every 1 year, 2 gallons disappear

meaning that by 5 years there will be no substance left.

(5*2=10)

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