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How do you answer cube root 1/27 = 3-y (the negative y is a power on 3)?

Guest Sep 24, 2017

Best Answer 

 #1
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Like so

 

\(\frac{1}{27}=3^{-y}\\ \frac{1}{27}=\frac{1}{3^y}\\ 3^y=27\\y=3\)

Alan  Sep 24, 2017
 #1
avatar+26973 
+4
Best Answer

Like so

 

\(\frac{1}{27}=3^{-y}\\ \frac{1}{27}=\frac{1}{3^y}\\ 3^y=27\\y=3\)

Alan  Sep 24, 2017
 #2
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O ma god Alan your'e a jeniuz thanks so much

Guest Sep 25, 2017

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