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(1/64)^x = 1/512 what is x?

 Feb 1, 2015

Best Answer 

 #1
avatar+130477 
+13

1/64 = 1/2^6    1/512 = 1/2^9   ..so we have..

(1/2^6)^x  = (1/2)^9 =

(1/2)^(6x) = (1/2)^9      we have like bases, so equating exponents, we have

6x =9   divide by 6

x = 9/6 = 3/2

 

 

 Feb 1, 2015
 #1
avatar+130477 
+13
Best Answer

1/64 = 1/2^6    1/512 = 1/2^9   ..so we have..

(1/2^6)^x  = (1/2)^9 =

(1/2)^(6x) = (1/2)^9      we have like bases, so equating exponents, we have

6x =9   divide by 6

x = 9/6 = 3/2

 

 

CPhill Feb 1, 2015
 #2
avatar+118703 
+8

(1/64)x=1/512$turnbothsidesupsidedownandyouget$64x=512$method1$64x=512log64x=log512xlog64=log512x=log512log64x=1.5$method2$64x=51264=26and512=28(26)x=2926x=296x=9x=9/6=1.5

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 Feb 2, 2015

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