Answer:
B
Step-by-step explanation:
Using the rules of exponents
[tex]a^{-m}[/tex] ⇔ [tex]\frac{1}{a^{m} }[/tex]
[tex]a^{\frac{m}{n} }[/tex] ⇔ [tex]\sqrt[n]{a^{m} }[/tex]
Given
[tex]t^{-\frac{2}{7} }[/tex]
= [tex]\frac{1}{t^{\frac{2}{7} } }[/tex]
= [tex]\frac{1}{\sqrt[7]{t^{2} } }[/tex]
