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Julia is going for a walk through the neighborhood. what unit of measure is most appropriate to describe the distance she walks?

What is the prime factorization of 230

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. what distance from city a is the point where the truck and the car will meet?