anonymous
  • anonymous
Please help me have been trying to solve this problem for a while and its been very frustrating. Krypton-91 is a radioactive substance that decays very quickly. The function Q(t)=Qoe^-kt models the radioactive decay of krypton-91. Q represents the quantity remaining after t seconds, and the decay constant, k, is approximately 0.07. How long will it take a quantity of krypton-91 to decay to 10% of its original amount? Round your answer to the nearest second.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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BioHazard9064
  • BioHazard9064
new account?
anonymous
  • anonymous
yeah
anonymous
  • anonymous
thnks

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BioHazard9064
  • BioHazard9064
to tell the truth it should show you what to do here. http://openstudy.com/study#/updates/5564be9ae4b0a3c430174bba
BioHazard9064
  • BioHazard9064
because I have no clue how to solve this
anonymous
  • anonymous
ok thanks for trying is anyone else going to help me er...?
BioHazard9064
  • BioHazard9064
probley not
BioHazard9064
  • BioHazard9064
most of them are offline
anonymous
  • anonymous
ok thnk u
BioHazard9064
  • BioHazard9064
well most 99s are ofline
anonymous
  • anonymous
;)
triciaal
  • triciaal
|dw:1438013469233:dw|
anonymous
  • anonymous
|dw:1438013934337:dw|
radar
  • radar
Plugging in the values you will get:|dw:1438014193611:dw|
radar
  • radar
|dw:1438014360726:dw|
radar
  • radar
-2.30 =-.07t t = -2.30/-0.07 t=32.9 seconds

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