Interstate 91 is the longest interstate highway in the united states, connecting the cities of seattle, washington and boston, massachusetts. the interstate is 4,987,000 meters in length. if 1 mile = 1.609 kilometers, how many miles long is interstate 90.

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step-by-step explanation:

10 down (bang1)

5 up

5down (2)

2.5 up

2.5 down (3)

1.25 up

1.25 down (4)

now add them up : )

hoped i lol

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38 was the other number of your question.