Answer:
1.6<x<9.6
Explanation:
Triangle says the sum of any 2 sides is bigger than the third.
Assume a,b,c are side measurements of a triangle.
So if you know two sides a and b then the third number, c, is such that |b-a|<c<a+b.
So just add the given numbers and find the positive difference.
5.6+4=9.6
5.6-4=1.6