No, it is rational.
.7
No it is a whole number so it cannot be irrational.
-7 is a rational number
No.
It is a irrational number. Because the square root of every imperfect square is irrational number.
0.2857
0.4286
.7
105
No it is a whole number so it cannot be irrational.
-7 is a rational number
8
No.
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 - if I had an irrational number x, and I added that to the number (7-x), I would end up with 7.If the number is irrational, it can be subtracted from a rational/integer to make another irrational.
It is a irrational number. Because the square root of every imperfect square is irrational number.
Every irrational number, when multiplied by 0.4 will produce an irrational number.