The american academy of pediatrics recommends that infants receive breast milk rather than cow's milk until they are over months old.

Six months.

Explanation:

The mother's milk is important for the child as it provides the proteins and antibodies to fight against the disease. The doctors recommend the breast milk for the infants.

American  academy of pediatrics have recommended that infants should be given six months breast feeding. This breast feeding acts as the complete diet for the infants and improves their immunity.

Thus, the answer is six months.

a, b, c - sides of a triangle

a + b > c

a + c > b

b + c > a

we have a = 5m and b = 11m. substitute:

5 + 11 > c

16 > c → c < 16

5 + c > 11         subtract 5 from both sides

c > 6

11 + c > 5         subtract 11 from both sides

c > -6

c < 16 and c > 6 and c > -6

thereofre your answer is 6m < c < 16m