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3 votes
I need help on 5 please help fast

I need help on 5 please help fast-example-1

2 Answers

3 votes
the correct answer is 83.

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User Freiksenet
by
8.9k points
6 votes
the equation you would use is
mean= Test1+test2+test3+test4+test5+Test6+x/Total number of tests

so 83=89+78+69+81+89+90+X/7
First mutiple both sides by 7 so
581=496+X
you then substract the 496 and get 85
so she would need a 85 on the 7th test
User Volodymyr
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7.4k points