Question

In the following equation, find which variables x, y, z etc. represent rational or irrational number:

t² = 0.4

Answer 1

Given that t² = 0.4

Now we have to find the value of t

`rArrt=sqrt0.4`

`rArrt=sqrt(4/10)`

`rArrt=2/sqrt10`

So it is an irrational number