Answer:
x=11
Explanation:
12+8+7+3+9=39
50-39= 11
x = 11
The Frequency column has to total 50 ( number of rolls on dice )
Thus total the given frequencies and equate to 50, that is
12 + 8 + 7 + 3 + 9 + x = 50
39 + x = 50 ( subtract 39 from both sides )
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