No, it is rational.
Yes
It is irrational.
Rational
Such a sum is always irrational.
The square root of 94 is an irrational number
Yes
No, the square root of 78 is not a rational number. A rational number can be expressed as a fraction of two integers, but since 78 is not a perfect square, its square root cannot be simplified to such a form. The square root of 78 is approximately 8.83, which is an irrational number.
Irrational. Irrational. Irrational. Irrational.
It is irrational.
Rational
Such a sum is always irrational.
If it says "negative irrational", then obviously it is irrational.
No
The square root of 94 is an irrational number
yes
Yes. The sum of two irrational numbers can be rational, or irrational.
-Pi is irrational, because it does not terminate or repeat. Whenever you multiply an irrational number by a rational number (-1), the result is an irrational number.