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andre [41]
3 years ago
11

Pleaseeeee helllpppp

History
2 answers:
Vikentia [17]3 years ago
8 0
(I believe this has to do with Mathematics, not History) but the answer is 30. The mean is basically just the average, so you add all of the numbers together (in this case it goes up by 10 each time, 15, 25, 35, 45) then you divide that number by the amount of items there is (in this case there is 4) so you do 120/4 and you get 30
yawa3891 [41]3 years ago
5 0
15+25+35+45=120    120 divide 4 = 30

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