Question

Which is an irrational number?
A.1
B.9
C.49
D.80

Answer 1

An Irrational Number is a real number that cannot be written as a simple fraction.

Answer 2

Aren't they all rational?

Answer 3

none of these

Answer 4

Wait 80 is irrational

Answer 5

Irrational numbers are numbers that cannot be expressed as fractions with whole numbers.

Answer 6

cuzz the others can be expressed as ratios

Answer 7

Yes.

Answer 8

√80

The other 3 are whole numbers and are therefore rational:
√1 = 1
√9 = 3
√49 = 7

Answer 9

Yes.

Answer 10

kk lol

Answer 11

oh its sqrt 80
the sqrt sign is invisible in the options

Answer 12

yes sorry about that

Answer 13

so your answer is right then

Answer 14

Correct.