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Mathematics 19 Online
OpenStudy (surryyy):

A student had the following scores on quizzes: 26, 28, 34, and 37. What score would be needed on one additional quiz for this student to have a mean score of 31? Answer 30 31 34 38

ganeshie8 (ganeshie8):

solve : (26 + 28 + 34 + 37 + x)/5 = 31

OpenStudy (surryyy):

is the answer 30 or 31?

ganeshie8 (ganeshie8):

(26 + 28 + 34 + 37 + x)/5 = 31 multiply 5 both sides

ganeshie8 (ganeshie8):

your goal is to isolate x somehow..

OpenStudy (surryyy):

x = 30

ganeshie8 (ganeshie8):

looks correct !

OpenStudy (surryyy):

Ty!

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