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PLEASE HELP

In about how many years is the radioactive substance half of its original weight? Type answer to one decimal place.

PLEASE HELP In about how many years is the radioactive substance half of its original-example-1

1 Answer

3 votes

Answer:

13.5

Explanation:

(0.95)^x = ½

x = ^0.95 log ½

= 13.5

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