The square root of 48 is the only irrational number in that group.
So half of Nina's age is 10/2= 5. And since Greg is three years younger we subtract from 5 like so...
10/2=5
5-3
2
So Greg is 2 years old. I hope this helps love! :)
Step-by-step explanation:

A=20
5a-4=3a+36 (subtract 3a from both sides and add 4 to both sides)
2a=40. Divide 40by 2
A=20
Answer:
Had the same question, the answer was d
Step-by-step explanation:
Hope it helps!