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kap26 [50]
3 years ago
10

If 18 g of a radioactive substance are present initially and 9 yr later only 9 g remain, how much of the substance will be prese

nt after 12 yr?
After 12 yr there will be g of a radioactive substance.
(Round the final answer to three decimal places as needed. Round all intermediate values to seven decimal places as needed.)
Mathematics
1 answer:
kvasek [131]3 years ago
8 0

Answer:

Him hhhuuu vividly

Step-by-step explanation:

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<span>3y+2x=6
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--------------add
8y = 16
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</span>3y+2x=6
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