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Kipish [7]
3 years ago
9

What is 7.8 × 105 m/h in kilometers per day? A. 3.24 × 1010 km/day B. 3.24 × 108 km/day C. 1.872 × 106 km/day D. 1.872 × 104 km/

day
Mathematics
1 answer:
damaskus [11]3 years ago
8 0
The comparison may be done by the dimensional analysis and the proper conversion factor. That is,
   (7.8 x 10^5 m/h) x (1 km / 1000 m) x (24 h / 1 day) = 18720 km / day
The scientific notation of the answer is 1.872 x 10^4 km/day. Thus, the answer is letter D. 
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