document.write( "Question 946222: Find the associated half-life time or doubling time.
\n" ); document.write( "Q = 1900e−0.025t \n" ); document.write( "

Algebra.Com's Answer #577248 by Fombitz(32388) $\"\"$ $\"About$

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When $\"t=0\"$ , $\"Q=1900\"$
\n" ); document.write( "Find $\"t\"$ when, $\"Q=%281%2F2%291900\"$
\n" ); document.write( " $\"%281%2F2%291900=1900e%5E%28-0.025t%5Bh%5D%29\"$
\n" ); document.write( " $\"ln%281%2F2%29=-0.025t%5Bh%5D\"$
\n" ); document.write( " $\"t%5Bh%5D=-%28ln%281%2F2%29%2F0.025%29\"$
\n" ); document.write( "approximately,
\n" ); document.write( " $\"t%5Bh%5D=27.73\"$ \r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

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