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Mathematics, 19.03.2021 16:00 anitadefrances

Sandra took 4 tests in math and her mean score was 18. I she scored 18, 22, and 17 in three tests, find Sandra's score in the fourth test.

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Sandra took 4 tests in math and her mean score was 18. I she scored 18, 22, and 17 in three tests,...
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