Kara has five exam scores of 89, 82, 69, 79, and 70 in her biology class. What score does she need on the final exam to have a mean grade of 80? Round your answer to two decimal places, if necessary. (All

Markus Benko asked Nov 8, 2023

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Markus Benko asked Nov 8, 2023

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14 votes

Answer:

Explanation:

(89+82+69+79+70+x)/(6) = 80 Combine like terms

(389+ x)/(6) = 80 Multiple by sides by 6

380 + x = 480 Subtract 389 from both sides.

x = 91

Vihung answered Nov 15, 2023

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