document.write( "Question 844089: A radioactive material has a half-life of 3 minutes. If you begin with 512000 radioactive atoms, approximately how many would u expect to have after 12 minutes.\r
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "

Algebra.Com's Answer #508541 by ewatrrr(24785)\"\" \"About 
You can put this solution on YOUR website!
 
\n" ); document.write( "Hi,
\n" ); document.write( "Q(t) =\"+Q%5B0%5De%5E%28-kt+%29\"
\n" ); document.write( "A radioactive material has a half-life of 3 minutes
\n" ); document.write( "Allows one to find k
\n" ); document.write( " .5 =\"+e%5E%28-3k+%29\"
\n" ); document.write( "ln(.5)/-3 = k = .2310
\n" ); document.write( "Q(12) =\"+512000e%5E%28-.231%2A12+%29\" \n" ); document.write( "
\n" );