## anonymous one year ago FAN AND MEDAL

1. anonymous

Identify square root of 2 as either rational or irrational, and approximate to the tenths place. Rational: square root of 2 ≈ 1.5 Irrational: square root of 2 ≈ 1.5 Rational: square root of 2 ≈ 1.4 Irrational: square root of 2 ≈ 1.4

2. anonymous

@isaac4321

3. SolomonZelman

Ok, do you knwo what RATIONAL and IRRATIONAL numbers are?

4. SolomonZelman

let me briefly introduce all numbers to you, ok?

5. anonymous

ok

6. anonymous

i think the answer is D

7. anonymous

hey @kiamousekia

8. anonymous

hey

9. anonymous

you are right

10. SolomonZelman

Natural numbers: $$\color{black}{ \displaystyle 1,~~2,~~3,~~4,~~5,~~6~~... }$$ Whole numbers: $$\color{black}{ \displaystyle 0,~~1,~~2,~~3,~~4,~~5,~~6~~... }$$ (same as natural numbers, BUT INCLUDES ZERO) Integers: $$\color{black}{ \displaystyle ...~-6,~~-5,~~-4,~~-3,~~-2,~~-1,~~0~~1,~~2,~~3,~~4,~~5,~~6~~... }$$ (positive and negative whole numbers) Rational numbers: Fractions, like $$\color{black}{ \displaystyle 1/5,~ }$$ $$\color{black}{ \displaystyle -4/9,~~~~10/7 }$$ and on Also, $$\color{black}{ \displaystyle \sqrt{16} }$$ since it is really a 4) and all roots, if and only if the number inside is a perfect square (perfect cube or whatever) (But Rational numbers also includes all integers) Irrational number Roots like, $$\color{black}{ \displaystyle \sqrt{3},~~\sqrt[8]{8} }$$ Also Euler (and other) special constants such $$\color{black}{ \displaystyle \pi,~e,~\psi~ }$$ Also logarithms $$\color{black}{ \displaystyle \ln(2) }$$, $$\color{black}{ \displaystyle \log_9{7} }$$ ...

11. anonymous

by the way d is the answer

12. anonymous

thanks

13. anonymous

i will give the medal and fan to @SolomonZelman because he/she sorry but i don't... because he/she used a lot of time to try to help me

14. SolomonZelman

You don't have to, i got enough meds and fans o~o As long as you have all of the knowledge that you were looking for ....

15. SolomonZelman

(not that i mind though)

16. anonymous

okay but thanks for helping

17. SolomonZelman

You welcome~!

18. anonymous

i don't know you

19. anonymous

k