Answer:
AB=9.49
Step-by-step explanation:
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Answer:
19 is the third number.
Step-by-step explanation: To find the mean you need to add all of the numbers up then divide it by how many numbers there are. Since the mean is 10 and there are 3 numbers, I know that the numbers have to sum up to 30, and since 7+4=11 then I know to make the sum 30 I need 19 more. So the third number in your data set is 19.
Answer:
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