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 t

Question

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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Thu Giang 7 days 2021-07-22T09:21:34+00:00 1 Answers 0 views 0

Answers ( )

    0
    2021-07-22T09:23:10+00:00

    Answer:

    15

    Step-by-step explanation:

    (18+22+17+x)/4=18

    18+22+17+x=18×4

    57+x=72

    x=72-57

    x=15

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