ShyBinFloxkin ShyBinFloxkin

26-02-2018
Mathematics

contestada

Evie has scores of 72, 78, 80 And 84 On four Science quizzes. What score must she get on the next quiz to have an average of at least 80?

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airelavice airelavice

26-02-2018

x= the next quiz
(72+78+80+84+x)/5=80
*5 *5
72+78+80+84+x=400
314+x=400
-314 -314
x=86
Evie needs to get a score of 86 on her next science quiz.

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