elihot
elihot elihot
  • 16-01-2015
  • Mathematics
Answered

Reuben has scores of 70,75,83, and 80 on four spanish quizzes. what score must he get on the next quiz to achieve an average of at least 80?

Answer :

naǫ
naǫ naǫ
  • 16-01-2015
x - the score he must get

[tex]\frac{70+75+83+80+x}{5} \geq 80 \\ \frac{308+x}{5} \geq 80 \\ 308+x \geq 400 \\ x \geq 92[/tex]

He must get at least 92 points.
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Аноним Аноним
  • 16-01-2015
ok well If he gets a 92 percent he will have a 80!! :)

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