3 years ago

when joseph travel by train it takes him 3 hours to travel 84 miles at the same rate how many miles he traveled in 5 hours

1 answer:

4 0

So you just have to use proportions

3 hours. 5 hours
——-———.=. -------------
84 miles. X

3x=420

Then you divide 3 into 420

So the answer 140 milea

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How do you solve this

fiasKO [112]

(((x + y) / 3) + (1 / x)) / (5 + (15 / x))
The best way is to make it one fraction.
Multiply by ((3x/3x) / (3x/3x)) to remove the other fractions.
((x(x + y)) + 3(1)) / (5(3x) + 3(15))
(x^2 + xy + 3) / (15x + 45)
Then factor to simplify
(x^2 + xy + 3) / (3(x + 15))

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3 years ago

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Answer:

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Step-by-step explanation:

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