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Mathematics 6 Online

OpenStudy (x3_drummerchick):

How do i solve this!? Will give medals! Radium-221 has a half-life of 30 sec. How long will it take for 84% of a sample to decay? (Round your answer to the nearest whole number.)

11 years ago

OpenStudy (x3_drummerchick):

@Nnesha

11 years ago

OpenStudy (x3_drummerchick):

@Jhannybean

11 years ago

OpenStudy (x3_drummerchick):

@dan815

11 years ago

OpenStudy (dan815):

okay so basically

11 years ago

OpenStudy (dan815):

we keep losing 1/2 ever 30 seconds

11 years ago

OpenStudy (x3_drummerchick):

i found the 'r' by doing ln2/30

11 years ago

OpenStudy (dan815):

wait i have to figure it out too

11 years ago

OpenStudy (dan815):

|dw:1443224796743:dw|

11 years ago

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