Question

Which number is not Rational?

Answer 1

Much numbers !

Answer 2

\[\sqrt{3}\]
0.25
1/5
\[\sqrt{9}\]

Answer 3

Many numbers bro, just anything with unlimited decimals are irrational. Like pi or 1/3

Answer 4

those numbers

Answer 5

Aha !
\[\sqrt{9}=?\]

Answer 6

what?

Answer 7

3

Answer 8

The D = ???

Answer 9

root 3

Answer 10

As long as it is finite it is rational, hence infinite decimals are irrational. Like pi, which goes on unlimited but 1/2 is rational because it stops at .5

Answer 11

d is the answer?

Answer 12

wait why is 3 not rational?

Answer 13

Type it in a calculator and see, whichever has way too many decimals to fit, it is irrational

Answer 14

No !
We say :
Rational numbers are this :
R:{a/b|a,b in Z and isnt b= 0 }
k ?

Answer 15

ok im confused!?!?!

Answer 16

@Hero

Answer 17

@Hero these people are confusing me

Answer 18

Bro, rational numbers just mean it could be represented as a fraction or no decimal place number. That's it man, anything with reoccuring or repeating decimals, that's the shtuff that's irrational

Answer 19

root 3 is irrational bcoz it cannot be expressed as a ratio od two coprime poitive integers

Answer 20

ok

Answer 21

while the res of them can be expressed.even root 9 is equal to + or - 3

Answer 22

look :
In 2 : 0.25 is Rational .
In 3 : 1/5 is Rational .
In 4 : \[\sqrt{9}\] = 3
So in 1 can u say how is :
\[\sqrt{3}=????\]
So its Rational .
Got it ?:)

Answer 23

ok still confused

Answer 24

If a number is rational, it can be expressed in the form \(\dfrac{a}{b}\)

\(0.25 = \dfrac{1}{4}\)
\(\dfrac{1}{5} = \dfrac{1}{5}\)
\(\sqrt{9} = 3 = \dfrac{6}{2}\)

@PvtGunner, Can we express \(\sqrt{3}\) in rational form?

Answer 25

No

Answer 26

Why not?

Answer 27

a and b must be real number integers by the way.

Answer 28

Because \[\sqrt{3}\] can only be a decimal

Answer 29

right?

Answer 30

Well, at the moment it is in irrational form, not decimal form. In decimal form, the value of \(\sqrt{3}\) can only be approximated. Nevertheless we are unable to express it in rational form. And reason is simply because \(\sqrt{3}\) is an irrational number.

Answer 31

OHHH ok i get it thank you @Hero

Answer 32

so basically if it is rational it can be written as a fraction and if not rational it cant be written as a fraction

Answer 33

@Hero

Answer 34

Well,

\(\dfrac{\sqrt{3}}{1}\) is a fraction and it equals \(\sqrt{3}\)
\(\dfrac{2\sqrt{3}}{2} = \sqrt{3}\) and it is also a fraction.

What makes a rational number \(\dfrac{a}{b}\) unique is that a and b must be integers.

Answer 35

ok that makes sense

Answer 36

so the anwser is\[\sqrt{3}\]