Respuesta :

clarch19

Answer:

13.8 < x < 19.6

Step-by-step explanation:

the Triangle Sum Inequality states that the sum of any two sides must be equal than the third side

2.9 + x > 16.7

x > 13.8

16.7 + 2.9 > x

19.6 > x

therefore,  13.8 < x < 19.6