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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
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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
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ganeshie8 (ganeshie8):
looks correct !
OpenStudy (surryyy):
Ty!
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