document.write( "Question 1156174:
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document.write( "The mean of n numbers is 5.If the number 13 is now included with the n numbers the new mean is 6.Find the value of n. \n" );
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Algebra.Com's Answer #778858 by Boreal(15235)![]() ![]() You can put this solution on YOUR website! the total of n umbers is 5n \n" ); document.write( "add 13 to that total and get 5n+13 \n" ); document.write( "divide that by n=1 and get 6 \n" ); document.write( "so (5n+13)/(n+1)=6 \n" ); document.write( "so 5n+13=6n+6 \n" ); document.write( "n=7 numbers ANSWER \n" ); document.write( "7 * mean of 5=35 total \n" ); document.write( "add 13 to that and get 48 \n" ); document.write( "divide by n+1 of 8 and get 6. \n" ); document.write( " |