skrappy skrappy

17-07-2016
Mathematics

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1 kg = 2.2lb

6.3lb = ___kg
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dalendrk dalendrk

17-07-2016

[tex]\dfrac{1kg}{xkg}=\dfrac{2.2lb}{6.3lb}\ \ \ \ |cross\ multiply\\\\2.2x=1\cdot6.3\\\\2.2x=6.3\ \ \ |divide\ both\ sides\ by\ 2.2\\\\x=\dfrac{6.3}{2.2}\\\\x=\dfrac{63}{22}\\\\\boxed{6.3lb=2\frac{19}{22}kg\approx2.86kg} [/tex]

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