Respuesta :

altavistard

Answer:

Step-by-step explanation:

#4

√25= 5 and 5 is rational.

#7

√(1/2) is equivalent to √1 / √2.    √1 is rational but √2 is irrational.

Thus the expression √(1/2) is irrational.

Dima2006
Your answer:

4. 5

7. 1/2