document.write( "Question 1195554: Bismuth-210 is an isotope that radioactively decays by about 13% each day, meaning 13% of the remaining Bismuth-210 transforms into another atom (polonium-210 in this case) each day. If you begin with 133 mg of Bismuth-210, how much remains after 6 days?\r
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Algebra.Com's Answer #828078 by ikleyn(52781) $\"\"$ $\"About$

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\n" ); document.write( "Bismuth-210 is an isotope that radioactively decays by about 13% each day,
\n" ); document.write( "meaning 13% of the remaining Bismuth-210 transforms into another atom
\n" ); document.write( "(polonium-210 in this case) each day. If you begin with 133 mg of Bismuth-210,
\n" ); document.write( "how much remains after 6 days?
\n" ); document.write( "After 6 days,
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document.write( "The remaining mass of Bismuth-210 after one day is\r\n" );
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document.write( "    M(1) =  = ,\r\n" );
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document.write( "where M(0) is the starting amount of Bismuth-210.\r\n" );
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document.write( "After 2 days the remainig mass is  .\r\n" );
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document.write( "After 3 days the remainig mass is  .\r\n" );
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document.write( "   . . . and so on . . . \r\n" );
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document.write( "After n days the remainig mass is  M(n) = .\r\n" );
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document.write( "Concretely for this problem, the remaining mass after 6 days will be\r\n" );
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document.write( "    M(6) =  =  57.672 mg  (rounded).    ANSWER\r\n" );
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\n" ); document.write( "\n" ); document.write( "On radioactive decay, see the lesson\r
\n" ); document.write( "\n" ); document.write( "    - Radioactive decay problems \r
\n" ); document.write( "\n" ); document.write( "in this site.\r
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\n" ); document.write( "\n" ); document.write( "You will find many similar (and different) solved problems there.\r
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\n" ); document.write( "\n" ); document.write( "        Use this lesson as your handbook, textbook, guide, tutorials, and (free of charge) home teacher.\r
\n" ); document.write( "\n" ); document.write( "        Learn the subject from there once and for all.\r
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\n" ); document.write( "\n" ); document.write( "Also, you have this free of charge online textbook in ALGEBRA-I in this site\r
\n" ); document.write( "\n" ); document.write( "    - ALGEBRA-I - YOUR ONLINE TEXTBOOK.\r
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\n" ); document.write( "\n" ); document.write( "The referred lesson is the part of this online textbook under the topic \"Logarithms\".\r
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\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Save the link to this online textbook together with its description\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Free of charge online textbook in ALGEBRA-I
\n" ); document.write( "https://www.algebra.com/algebra/homework/quadratic/lessons/ALGEBRA-I-YOUR-ONLINE-TEXTBOOK.lesson\r
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\n" ); document.write( "\n" ); document.write( "to your archive and use it when it is needed.\r
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