document.write( "Question 1069666: Det. Robert Goren is investigating a homicide, and the medical examiner tells him that when he arrived at 6:00 p.m., the body had a temperature of 95.3 degrees Fahrenheit. By the time Nichols had arrived an hour later (at 7:00), he checks again and determines the temperature to be 94.9 degrees. The ambient air temperature is 90 degrees. Use the equation 𝑇(𝑡) = 𝑎𝑒^(−𝑘𝑡) + 90 to determine when the victim was killed. (The normal body temperature is 98.6 degrees. Round k to 3 decimal places and find the time of death to the nearest minute.\r
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document.write( "I'm really confused on how to go about this problem, any help would be greatly appreciated! \n" );
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Algebra.Com's Answer #684849 by KMST(5328)![]() ![]() You can put this solution on YOUR website! \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "ONE WAY TO SOLVE: \n" ); document.write( "We define \n" ); document.write( "substitute \n" ); document.write( "and then use \n" ); document.write( "Adding the negative time we find to 6:00 p.m. gives us the murder time. \n" ); document.write( "It gets easier if we solve \n" ); document.write( "and then just plug stuff in. \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "At 6:00 p.m. \n" ); document.write( " \n" ); document.write( "At 7:00 p.m. \n" ); document.write( " \n" ); document.write( "At the time the victim died, \n" ); document.write( " \n" ); document.write( "Since \n" ); document.write( "time of death = \n" ); document.write( " \n" ); document.write( "EXPLANATION AND ALTERNATE WAY TO SOLVE: \n" ); document.write( "You may have heard in class that \n" ); document.write( " \n" ); document.write( "models exponential decay; \n" ); document.write( "that it asymptotically approaches \n" ); document.write( "or even that \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "It would have \n" ); document.write( "and would decrease towards \n" ); document.write( "Nothing else is specified about that function, \n" ); document.write( "so we will say that \n" ); document.write( " \n" ); document.write( "So, \n" ); document.write( " \n" ); document.write( "An hour later, \n" ); document.write( "and \n" ); document.write( " \n" ); document.write( "--> \n" ); document.write( "--> \n" ); document.write( "Now we have the function \n" ); document.write( " \n" ); document.write( "and we want to find \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "Since \n" ); document.write( "time of death = |