Mathematics
         
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           ☆1 arithmetic calculations

[1/1 Formula]
    Work: Calculate the value of equation ((60%-30%)^2*0.3+(40%-30%)^2*0.2+(20%-30%)^2*0.3+(-10%-30%)^2*0.2)^(1/2) .
    Question type: Mathematical calculation
    Solution:
          ((60%-30%)^2*0.3+(40%-30%)^2*0.2+(20%-30%)^2*0.3+(-10%-30%)^2*0.2)^(1/2)
        =(0.3^2*0.3+(40%-30%)^2*0.2+(20%-30%)^2*0.3+(-10%-30%)^2*0.2)^(1/2)
        =(0.3^2*0.3+0.1^2*0.2+(20%-30%)^2*0.3+(-10%-30%)^2*0.2)^(1/2)
        =(0.3^2*0.3+0.1^2*0.2+(-0.1)^2*0.3+(-10%-30%)^2*0.2)^(1/2)
        =(0.3^2*0.3+0.1^2*0.2+(-0.1)^2*0.3+(-0.4)^2*0.2)^(1/2)
        =0.064^(1/2)
        =0.064^0.5
        =0.25298221281347

    Answer:((60%-30%)^2*0.3+(40%-30%)^2*0.2+(20%-30%)^2*0.3+(-10%-30%)^2*0.2)^(1/2)=0.25298221281347


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