The speed of sound is approximately 1.2 x 10^3 km/h. How long does it take for sound to travel 7.2 x 10^2 km? Write your answer in minutes.
Show your work.

  36 minutes

Step-by-step explanation:

  time = distance / speed

  time = (7.2×10² km)/((1.2×10³ km)/(60 min)) = (7.2×60/1.2)×10²⁻³ min

  = 360×10⁻¹ min

  = 36 min

It takes sound about 36 minutes to travel 720 km.

bull

step-by-step explanation:

126 maybe. sorry