document.write( "Question 713465: Manuel has scored 80,64,77 and on his previous three tests. What score does he need on his next test so that his average(mean)is 79?
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Algebra.Com's Answer #438441 by persian52(161)![]() ![]() You can put this solution on YOUR website! He needs 95 \n" ); document.write( "(Divide by how many numbers, there are 4 graded marks).\r \n" ); document.write( "\n" ); document.write( "Therefore: \n" ); document.write( "80+64+77+95 = 316 / 4 = 79\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |