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vagabundo [1.1K]
2 years ago
5

Please help me I really really need help

Mathematics
1 answer:
postnew [5]2 years ago
5 0

Answer:

B) \sqrt{2} ÷ 2\sqrt{5}

Step-by-step explanation:

A→ 2\sqrt{5} ÷ \sqrt{5}

= \frac{2\sqrt{5} }{\sqrt{5} }

<u>→ </u><u>2</u><u> is a rational number</u>

B) → \sqrt{2} ÷ 2\sqrt{5}

=\frac{\sqrt{2} }{2\sqrt{5} }

=\frac{\sqrt{2} }{\sqrt{2}*\sqrt{2}*\sqrt{5}   }

= \frac{1}{\sqrt{10} }

<u>↑ is irrational number</u>

C) \frac{\pi }{2}÷ \pi

= \frac{\pi }{2} *\frac{1}{\pi }

=\frac{1}{2}

<u>↑ is a rational number</u>

D)5\pi ÷ \pi

= 5

<u>↑ is a rational number</u>

<u>So,</u><u> Option B</u><u> is your answer</u>

-----------------

hope it helps..

have a great day!!!

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