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OpenStudy (anonymous):
I am being asked a two part question and I cold use some help please....A) Write the expresion 27-2/3 in radical notation. B) Evaluate the radical expression. Please help
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OpenStudy (anonymous):
Help!!!!!!!
OpenStudy (anonymous):
I am thinking that it could possibly be 3sq(2x-1)1/2\[3\sqrt{(2-1)1/2}\]
OpenStudy (anonymous):
Hello will someone please help me.... Please
OpenStudy (nottim):
wats radical notation?
OpenStudy (whpalmer4):
\[27^{-2/3} = \frac{1}{27^{2/3}} = \frac{1}{(\sqrt[3]{27)}^2} = \frac{1}{(3)^2} = \frac{1}{9}\]
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OpenStudy (whpalmer4):
Here are the techniques I used: \[x^{-a} = \frac{1}{x^a}\] \[x^{a/b} = (\sqrt[b]{x})^a\] And of course 27 = 3 * 3 * 3 Does that all make sense?
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