Question

Which way of writing the number one point nine can be used to show that it is a rational number?

one point nine

one and nine tenths

nineteen tenths

one plus point zero nine

Answer 1

a rational number is a number that can be written as a fraction of integers ( a/b )
so 1.9 must be written as 19/10 to show that it is rational

Answer 2

so it will be 1.9

Answer 3

it is 19/10 (nineteen tenths)

Answer 4

o