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12.5% of an isotope remains after 8 years from the initial stage. After 8 more years the quantity persent will be?

Mathematics
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first find half- life.can u?
Let me try

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Other answers:

it... will... be... posted in physics group
@Yahoo! u there
nop....it is maths question ... in sequence and series
lol ok
No ... Idea
First |dw:1344690805456:dw|
here x is the initial amount of the isotope
can u find common ratio.......
or u can do it as |dw:1344690939900:dw|
|dw:1344690979564:dw|
|dw:1344691068840:dw|now find
can u? @Yahoo!
1 Attachment
\(.125 = e^{8r}\)
@Fellowroot has it !
|dw:1344691170393:dw|
people this girl needs help ---------> tafara27
so the answer is 1.56 percent
can also be done using simple maths......
do u want me to do that? @Yahoo!
@sauravshakya the answer should be 25/16 %
|dw:1344692147133:dw|
hw did u get that
i got it thxxx
ok.....
welcomx

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