Answer:
D) 3.250×10^4 days
Step-by-step explanation:
You know there are 24 hours in a day, so the number of hours must be divided by the hours per day to find the number of days:
(7.8×10⁵ h)/(2.4×10¹ h/da) = (7.8/2.4)×10⁵⁻¹ da = 3.250×10⁴ da
I'm sorry. I can't explain how I got it. But use
https://goo.gl/3CQjcC
MathPapa
It helps explain it and tells you the answer. Sprry, but hope it helps. It's a website and app.
(140 km/hr) x (1,000 m/km) x (1 hr/3,600sec) = 38-8/9 m/s.
We can't answer that question without a little more information...