Going into the final exam, which will count as two tests, Brooke has test scores of 75,86,74,65 and 96. What score does Brooke need on the final in order to have an average score of 80?

Question

Going into the final​ exam, which will count as two​ tests, Brooke has test scores of 75,86,74,65 and 96. What score does Brooke need on the final in order to have an average score of​ 80?

Raymond B. · Accepted Answer

[75+86+74+65+96 + 2X]/7 = 80(396+2X)/7=80396 + 2X = 5602X = 560-396 = 164X = 164/2 = 82 is needed on the Final to get an average grade of 80

Going into the final exam, which will count as two tests, Brooke has test scores of 75,86,74,65 and 96. What score does Brooke need on the final in order to have an average score of 80?

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Going into the final​ exam, which will count as two​ tests, Brooke has test scores of 75,86,74,65 and 96. What score does Brooke need on the final in order to have an average score of​ 80?

1 Expert Answer

Still looking for help? Get the right answer, fast.

OR

RELATED TOPICS

RELATED QUESTIONS

write a linear equation given the following data m=3/2 b=4

how do you solve linesr equqtions?

why does x=25 in equation 0.1(x+10)=0.3+-4?

How do I build an equation with an integer and solve it by the addition/subtraction method.

how do I solve -2x=9 and graph?

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Going into the final exam, which will count as two tests, Brooke has test scores of 75,86,74,65 and 96. What score does Brooke need on the final in order to have an average score of 80?