SOLUTION: the element decays at the rate of S(t)=se^-0.036t, where t is time in yrs and s the initial size in grams. If you have a 83-gram piece of this element how many grams will have in 2

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: the element decays at the rate of S(t)=se^-0.036t, where t is time in yrs and s the initial size in grams. If you have a 83-gram piece of this element how many grams will have in 2      Log On


   

Question 598934: the element decays at the rate of S(t)=se^-0.036t, where t is time in yrs and s the initial size in grams. If you have a 83-gram piece of this element how many grams will have in 2 yrs from now? round to nearest tenth of a gram.
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
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the element decays at the rate of S(t)=se^-0.036t, where t is time in yrs and s the initial size in grams.
If you have a 83-gram piece of this element how many grams will have in 2 yrs from now? round to nearest tenth of a gram.
:
S%28t%29+=+83%2Ae%5E%28-.036%2A2%29
Find e%5E%28-.072%29 with a calc
S(t) = 83 * .93053
S(t) = 77.2 gr after 2 yrs