yes
You wont be able to add a rational number and an irrational number and get a number not in a fraction ( 3 + 22/7) (21/7 + 22/7 = 43/7) So, yes as you see in the example above it made another irrational number.
Yes.
It must be a generalised rational number. Otherwise, if you select a rational number to multiply, then you will only prove it for that number.
yes
It is rational and also a whole number.
Yes.
It is equal to 43/9.
It is not defined, so it is not a number of any kind.
Given any two integers, x and y, such that y is not 0, then x/y is a rational number. So for example, 3476/43 is a rational number.
The number 1.43 can be expressed as a fraction - as 1 43/100 or one and forty-three hundredths. Therefore, it is rational.
43/7 is a mixed number. It is a positive rational number.
It is a decimal with 2 significant figures. It is a rational number 4.3 = (43/10). Not sure what else you're looking for.
It is a rational number. It can be written as a fraction.
yes
Is 12.05 a rational number or irrational number?
1.96 is a rational number