document.write( "Question 381806: The number of milligrams of a certain radioactive substance present at time (t) is given by A(t)= 774e^-(0.018t). How many milligrams are present at t=75? I hope I gave enough information. Please show each step. \n" ); document.write( "
Algebra.Com's Answer #270769 by stanbon(75887)\"\" \"About 
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The number of milligrams of a certain radioactive substance present at time (t) is given by A(t)= 774e^-(0.018t). How many milligrams are present at t=75?
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\n" ); document.write( "A(75) = 774e^-(0,018*75) = 774*0.25924 = 200.65 mg
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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