Answer:

Step-by-step explanation:
You are correct down to the part where you add the partial results:

200,000 is ten times 20,000
The answer would be 74,000. hope this helps
(3.7 x 10 to the 4th power) x 2 as well = 74,000
Answer:
11.46 meters
Step-by-step explanation:
12min 30sec = 12.5min
55km/h * 12.5min * 1h/60min = 11.4583333333meters
Answer:
i believe it half an inch
Step-by-step explanation: