lore2010acst lore2010acst

12-05-2018
Mathematics

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a student has test scores of 92%, 87%, and 78%. what must she need to score on thenlast test to maintain 80% or better?

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sarkhan2018 sarkhan2018

17-05-2018

We'll solve this equation in order to find the score of the 4th test, which we denote with x. [tex] \frac{92+87+78+x}{4}=80 [/tex]. Solving it we find that x=63. And it is the final answer for this problem.

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