SOLUTION: 85 grams of radioactive material will decay at a rate of 45% per day. How many grams will be left after 6 days? Round to the nearest hundredth.
This has to do with scientific no
Algebra ->
Customizable Word Problem Solvers
-> Finance
-> SOLUTION: 85 grams of radioactive material will decay at a rate of 45% per day. How many grams will be left after 6 days? Round to the nearest hundredth.
This has to do with scientific no
Log On
Question 611350: 85 grams of radioactive material will decay at a rate of 45% per day. How many grams will be left after 6 days? Round to the nearest hundredth.
This has to do with scientific notation Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! 85 grams of radioactive material will decay at a rate of 45% per day. How many grams will be left after 6 days? Round to the nearest hundredth.
This has to do with scientific notation
----
If 45% decays, 55% remains after each year.
-------
A(t) = x*(0.55)^t
-----
A(6) = 85*(0.55)^6
= 0.02353
= 2.353x10^-2 grams
=======================================================
Cheers,
Stan H.
=================