It's 7 because the mean is the average. To find the average of something you add all the numbers up then take then answer divided by the number of how many numbers you added together.
(1) 8
(2) + 5
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13
(3) +2
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15
(4)+10
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25
(5)+10
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35
35 divided by 5 equals 7
= 2/5-8/2 = (2/5)-(8/2) = (4/10)-(40/10) = -36/10 = -18/5 Or as a decimal, -3.6
4/5 isequal to 8/104/5 * 2/2 = 8/10
here are all the possible combinations 6(12)+8 6(10)+10(2) 6(9)+8(2)+10 6(8)+8(4) 6(7)+8+10(3) 6(6)+8(3)+10(2) 6(5)+8(5)+10 6(5)+10(5) 6(4)+8(2)+10(4) 6(4)+8(7) 6(3)+8(4)+10(3) 6(2)+8+10(6) 6(2)+8(6)+10(2) 6+8(3)+10(5) 6+8(8)+10 8(10) 8(5)+10(4) 10(8)
As a mixed number 2.8 is 2 and 8/10 or 2 and 4/5 simplified
2/5 + 8/5 = 10/5 = 2
The answer is 8/10
= 2/5-8/2 = (2/5)-(8/2) = (4/10)-(40/10) = -36/10 = -18/5 Or as a decimal, -3.6
4/5 isequal to 8/104/5 * 2/2 = 8/10
here are all the possible combinations 6(12)+8 6(10)+10(2) 6(9)+8(2)+10 6(8)+8(4) 6(7)+8+10(3) 6(6)+8(3)+10(2) 6(5)+8(5)+10 6(5)+10(5) 6(4)+8(2)+10(4) 6(4)+8(7) 6(3)+8(4)+10(3) 6(2)+8+10(6) 6(2)+8(6)+10(2) 6+8(3)+10(5) 6+8(8)+10 8(10) 8(5)+10(4) 10(8)
2*5=10 10*8=80
MEAN = ( 8+10 )/2 = 18/2 =9
If you mean (2-2)/5, then it would be zero. However, if you mean 2 - (2/5), here is how to find the answer: Make the denominators equal: 2 - 2/5 = 10/5 - 2/5 Then the answer is: 8/5
As a mixed number 2.8 is 2 and 8/10 or 2 and 4/5 simplified
No ------------------------------------------------ 4/5 = (4×2)/(5×2) = 8/10 8 ≠ 3 → 8/10 ≠ 3/10 → 4/5 ≠ 3/10
2/5 + 8/5 = 10/5 = 2
mean =(5+9+10+2+7+9+14)/7=8 s^2 = Variance = (1/7){(5-8)^2+(9-8)^2+(10-8)^2+(2-6)^2+(7-8)^2+(9-8)^2+(14-8)^2}=14.6666 Standard deviation =s= sqrt(14.6666)=3.8297
8 and 12