Respuesta :

Americ
x= grade on next test

Add up all scores, divide by 6 and this equals the average of 84


(86 + 91 + 86 + 61 + 87 + x)/6= 84
add in parentheses

(411 + x)/6= 84
multiply both sides by 6

411 + x= 504
subtract 411 from both sides

x= 93


ANSWER: 93 is needed on the next test to have an average of 84

Hope this helps! :)

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