Respuesta :

mhanifa

Answer:

  • 1.33 seconds

Step-by-step explanation:

Use the given equation and substitute h with 9:

  • - 9 = -16t²
  • t² = 16/9
  • t = √(16/9)
  • t = 4/3 ≈ 1.33
VirαtKσhli

Answer:

0.75

Step-by-step explanation:

16t² = 9

t² = 9/16

t = √{9/16}

t = 3/4

t = 0.75 s