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Reptile [31]
3 years ago
6

A train traveling south leaves the station at a constant rate of 62 kilometers per hour. A second train traveling north leaves t

he station at the same time traveling at a constant rate of 68 kilometers per hour. How many hours after the trains leave will they be 455 kilometers apart?
A 3.5


B.
4.5


C.
5.5


D.
6.5
Mathematics
2 answers:
malfutka [58]3 years ago
7 0

Answer: 3.5 hours

Step-by-step explanation:

68 + 62 = 130

455 / 130 = 3.5

Hope this helps you! :)

oksano4ka [1.4K]3 years ago
5 0

Answer:

3.5

Step-by-step explanation:

I got it right on the test

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subtract x from each side

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subtract 64 from each side

142-64 = 2x

78=2x

divide by 2

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x=39

The number is 39

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saveliy_v [14]

Answer:

<em>l = w + 3cm</em>

<em>l = w + 3cmp = 2l + 2w = 58cm</em>

<em>l = w + 3cmp = 2l + 2w = 58cm </em>

<em>l = w + 3cmp = 2l + 2w = 58cm Solve by substitution:</em>

<em>l = w + 3cmp = 2l + 2w = 58cm Solve by substitution:2l + 2w = 58 ⇒ 2(w + 3) + 2w = 58</em>

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I hope this helps you.

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