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The mean of 15 numbers is 12. An extra number is included and the mean increases to 13. What the extra number?
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On average a herd of elephants travels 10 miles in 12 hours you can use that information to answer different questions drag each expression to show which is answers
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The mean of 15 numbers is 12. An extra number is included and the mean increases to 13. What the ext...
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