document.write( "Question 1163396: A radioactive substance decays so that after t years, the amount remaining,
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Algebra.Com's Answer #787477 by ikleyn(52932) $\"\"$ $\"About$

You can put this solution on YOUR website!
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document.write( "Exponential rate of decay per year \"r\" remains THE SAME during the entire decay process \r\n" );
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document.write( "(i.e. FOREVER, or, more precisely, until the last radioactive atom decayed :-).\r\n" );
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document.write( "It is equal to  r =  =  =  =  = 0.666666...  or  66.6666%  of the mass per year.\r\n" );
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document.write( "By the way, when you formulate a problem like this one, you should tell in your question, which rate of decay do you mean:\r\n" );
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document.write( "    exponential coefficient of decay or linear coefficient at the given time.\r\n" );
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document.write( "These are two different values and two different conceptions.\r\n" );
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document.write( "Without clarification, the meaning of the question is dark / unclear.\r\n" );
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\n" ); document.write( "\n" ); document.write( "What the tutor ankor@dixie-net.com wrote in his response, was not an answer to your question.\r
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\n" ); document.write( "\n" ); document.write( "It was something V E R Y different. It was about the remained mass amount after 2 years.\r
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\n" ); document.write( "\n" ); document.write( "On radioactive decay problems, see the lesson\r
\n" ); document.write( "\n" ); document.write( " - Radioactive decay problems \r
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