anonymous one year ago Which is an irrational number? A. B. C. D.

1. anonymous

I can't see the numbers.

2. anonymous

$a.\sqrt{1}$ $b.\sqrt{49}$ $c.\sqrt{9}$ $d.\sqrt{80}$

3. anonymous

sorry, it wouldnt let me do it w/o using the commands

4. geerky42

Well, which number in square root is NOT square number?

5. anonymous

-.-

6. anonymous

i like kittens, not math

7. anonymous

I believe its d

8. anonymous

do you also believe that it is d @geerky42 ?

9. geerky42

Why not A?

10. anonymous

is it a?

11. anonymous

Its between a or d

12. anonymous

T.T

13. anonymous

Sorry i think its a

14. geerky42

Com'on this is easy, really... is 1 a square number? Yes or no?

15. anonymous

no its not thats why its a

16. geerky42

Really? strange, because $$1^2 = 1$$

17. geerky42

or $$1\times1 = 1$$ So 1 is square number. So $$\sqrt{1}=1$$, which is not irrational number. Do same and check for B or C.

18. geerky42

You can do that yourself.

19. anonymous

thats what i just read cause the sqr root of 2 is irrational so the sqr root of 1 cant be irrational too

20. anonymous

so yea its d

21. anonymous

im sorry that these people are making it hard for you to understand, but the answer is d

22. anonymous

hes right

23. anonymous

kk thanks ^_^

24. anonymous

np

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