Question

Which choice shows the numbers correctly ordered?

Please help me I will give out extra points and the brain thing.

Answer 1

The ansewer is b
The square root of 1/21 means smaller then 1/21 and 1/21 is already the smallest. .20 or 1/5 is the second smallest and 4.5 is less then the square root of 21.

Answer 2

I think it's B

Explanation:

square root of 1/21 is smallest, then 1/5, then 4.15, then square root of 21