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what is 1.5 +/-0.5. is it 2 or 1.75, or 1.25 or 1

 Jan 11, 2019
 #1
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1.5 plus or minus  -0.5   =     1.5  + (-0.5) = 1      OR    1.5 - (-0.5) = 1.5 + .5 = 2        1 or 2

 Jan 11, 2019

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