Question

Which expression is an irrational number?
A) 0.78
B) √18
C) √169
D) None

Answer 1

Irrational number is a number that keeps going on and on forever doesn't stop

Answer 2

So we know A can't be the case because it stops it's .78 it doesn't go on forever

Answer 3

We know it's not c because that is 13 so that number stops and the square root of 18 is a number that keeps going on forever and it doesn't have a repeating decimal so the answer is C

Answer 4

*B

Answer 5

Thank you so much :)

Answer 6

No problem :)