Skylars grades on four math tests are 85,78,77 and 69 what does skylar need to. score on the next test in order to have a mean score of 80

Question

Mathematics

Filly Fally

1 February, 21:01

Skylars grades on four math tests are 85,78,77 and 69 what does skylar need to. score on the next test in order to have a mean score of 80

+5

Answers (2)

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Peppa Pig · Answer 1

Peppa Pig 1 February, 21:34

0

He needs to get at least a 91

Selena Robinson · Answer 2

Skylar's scores in relation to the desired mean are

+5, - 2, - 3, - 11

for a total of - 11.

In order to achieve the desired mean, Skylar must score 11 more than the desired mean: 80 + 11 = 91

Skylar needs to score 91 on the next test to have a mean score of 80.