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joja [24]
3 years ago
9

Hi can someone please help me? I’m confused

Mathematics
1 answer:
Svetach [21]3 years ago
5 0

Answer:

B, D and E

Step-by-step explanation:

Using the rules of exponents/ radicals

a^{-m} = \frac{1}{a^{m} }

a^{\frac{1}{2} } = \sqrt{a}

Given

49^{-\frac{1}{2} } = \frac{1}{49^{\frac{1}{2} } }  → E

= \frac{1}{\sqrt{49} }  → B

= \frac{1}{7} → D

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