Respuesta :

9514 1404 393

Answer:

  b) irrational

Step-by-step explanation:

  a² = 7/36 . . . . . . given

  a = (√7)/(√36) = (√7)/6

7 is not a perfect square integer, so √7 is irrational. Dividing it by an integer does nothing to make 'a' rational. a is irrational.