Question

Which number is irrational?
Select one:
a. √169
b. √144
c. √81
d. √156

Answer 1

What's a rational number?

Answer 2

A rational number is a number that can be expressed as a fraction or ratio (rational). The numerator and the denominator of the fraction are both integers.

Answer 3

A rational number can also be a whole number.

Answer 4

so the square root of 169 is 13, correct?

Answer 5

The number 13 is a rational number because it's a whole number.

Answer 6

yes 13 is right for 169

Answer 7

That means option A is not irrational, thus not the correct answer.

Answer 8

Option B is not irrational as well because that will give you 12. So is option C. That also gives you a whole number of 9.

Answer 9

Tell me what option D would give me? @Yolo4mecuite

Answer 10

option D is 12.5 for squr 156

Answer 11

Yeah ^^^^

Answer 12

So D is rational

Answer 13

no we are looking for irrational

Answer 14

Yes sorry

Answer 15

12.5 is not s whole number so it is irrational

Answer 16

I knew it was D, was just trying to teach

Answer 17

Oh ok Thank you! :)

Answer 18

hope I helped not hindered here.

Answer 19

12.5 is a rational number. That's a fraction with integers. The square root of 156 does not contain recurring numbers which means it's irrational.

Answer 20

yep you are right :)

Answer 21

good job..

Answer 22

Nice Work!