guad
guad
13-02-2015
Mathematics
contestada
simplify each equation, then solve. 1) log 2 128=x
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luana
luana
13-02-2015
[tex]l[tex]log_{2}128=x\\\\ Formula\ for\ log:\\ log_{a}c=b\ \ \ =>\ a^b=c\\\\ 2^x=128\\\\ 2^x=2^7\\\\ x=7\\\\Solution\ is\ x=7.[/tex][/tex]
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Аноним
Аноним
13-02-2015
[tex]\log _{ 2 }{ 128 } =x\\ \\ \log _{ 2 }{ \left( { 2 }^{ 7 } \right) } =x\\ \\ 7\cdot \log _{ 2 }{ 2 } =x[/tex]
[tex]\\ \\ 7\cdot 1=x\\ \\ \therefore \quad x=7[/tex]
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