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Mathematics

Answered

We should be her score in the seventh test to achieve an average of 80

We Should Be Her Score In The Seventh Test To Achieve An Average Of 80 class=

Answer :

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Explanation

To score an average of 80 after the 7th she needs to have 80*7=560 in total, then:

[tex]\begin{gathered} 98+82+79+63+77+80+x=560 \\ 479+x=560 \\ x=560-479 \\ x=81 \end{gathered}[/tex]

Answer

81

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