document.write( "Question 1090745: A 300g sample of thorium-234 has a half-life of 24 days. The mass of thorium, in grams, that remains after t days can be modeled by M(t)=300(1/2)^t/24. what mass will remain after 31 days? \n" ); document.write( "
Algebra.Com's Answer #705179 by ankor@dixie-net.com(22740)\"\" \"About 
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A 300g sample of thorium-234 has a half-life of 24 days.
\n" ); document.write( " The mass of thorium, in grams, that remains after t days can be modeled by:
\n" ); document.write( " M(t)=300(1/2)^t/24.
\n" ); document.write( " what mass will remain after 31 days?
\n" ); document.write( ":
\n" ); document.write( "\"M%28t%29+=+300%28.5%29%5E%2831%2F24%29\"; the exponent is \"31%2F24\"
\n" ); document.write( "Use your calc
\n" ); document.write( "M(t) = 300*.408479
\n" ); document.write( "M(t) = 122.54 grams remain after 31 days
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