document.write( "Question 516506: The mean of 10 numbers is 8. If an 11th number is now included in the results, the mean becomes 9. What is the value of the 11th number? Produce an algebraic solution. \n" ); document.write( "
Algebra.Com's Answer #344375 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! 10*8 = 80 \n" ); document.write( "11*9 = 99 \n" ); document.write( "----- \n" ); document.write( "99 - 80 = 19 \n" ); document.write( " \n" ); document.write( " |