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Mathematics, 03.05.2022 08:40 peterblessd6868

the following are ages in years of members in a group: 8,11,8,19,6,7,3x,11,11. If the mean age is 9, find x

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the following are ages in years of members in a group: 8,11,8,19,6,7,3x,11,11. If the mean age is 9,...
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