Question

Two sides of a triangle measures 9 and 19. which inequality shows all the possible lengths of the third side, x?

Answer 1

1) sum of two sides shod be more than third side
x<9+19
x<28
2) When side  with length 9, lies on the side with length 19,
19-9=10, so third side should be mo than 10
x>10

10<x<28