Question

Which of the following numbers are

considered "Irrational"?
c) 0.6
a) 13/3
d) -√49
g) 0
b) √20
3
e) --4--
h) -√8
8
f) - 110
i) -πt

Answer 1

`√(20) \\ - √(8) \\ - \pi \: t`

Explanation:

irrational numbers are square roots of non squared nubers ( so no sqrt 49 because that is 7), and some numbers found in nature like \pi\ and e.

sqrt 20 = sqrt 5 × sqrt 4 = sqrt 5 × 2

sqrt 8 = sqrt 4 × sqrt 2 = 2 × sqrt 2

sqrt 5 and sqrt 2 are irrational and pi is irational by its own nature.