Is the following statement true or false:
2 answers:
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The decimal representation of any number is a linear combination of powers of 10. In other words, given a number like 123.456, we can expand it as
for any
, so the above is the same as
Similarly, we can write
Now it's a question of reducing the fraction as much as possible. We have so
Answer:
5 hours.
Step-by-step explanation:
- If the train travels at a speed of 80 kilometers per hour, and a kilometer is equivalent to 1000 meters, then the train travels at a speed of
- Then, to reach the 400,000 meters, it will take
, 5 hours.