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enot [183]
3 years ago
10

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

Mathematics
1 answer:
Salsk061 [2.6K]3 years ago
7 0

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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Arada [10]
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trapecia [35]

Answer:

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Step-by-step explanation:

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4 0
4 years ago
Estimate : 1) 48% of 8 2) 3% of 119 3) 26% of 32 4) 76% of 280
zaharov [31]
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