brizzy95
brizzy95
04-10-2018
Mathematics
contestada
please help would mean a lot :?)
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adisa80
adisa80
04-10-2018
a I think I don't know what your doing
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kjne
kjne
04-10-2018
The answer is D
To find the mean of something, you have to add up all the numbers and then divide the sum by the amount of numbers you have.
[tex] - 10 + - 30 + - 25 + 15 + 35 = \\ - 15 \\ - 15 \div 5 = 3[/tex]
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9+10=21 3X3=9 5X2=10 3X2=6 3X5=15 so.... 6+15 is 21 :D that means 9+10 is 21
