Homework Help: algebra

Posted by aniiiii on Tuesday, May 17, 2011 at 6:35pm.

erika has received scores of 82, 87, 93, 95, and 90 on math quizzes. What score must Erika get on her next quiz to have an average of 90?

algebra - bill, Tuesday, May 17, 2011 at 6:38pm
93 90x6=540
82+87+95+90+93=447
540-447=93
algebra - Ms. Sue, Tuesday, May 17, 2011 at 6:39pm
She has 447 out of 500 points now.

0.9 * 600 = 540

540 - 447 = 93

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