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2 years ago

PLSSSS HELPPP MEEEEEE

Mathematics

1 answer:

Brrunno [24]2 years ago

7 0

Hi, I'm happy to help!

Parallel means that two lines are lined up in the same directions and will never intersect even if they were extended forever in directions.

Let's look at the first option of AB, and AD. We can see that both lines intersect at point A, so AB and AD are not parallel.

For the next option of CD and BE, we can see that both lines don't intersect and won't ever even if the lines were extended. So, CD and BE are parallel.

For the third option, we have BC and DE. These lines don't intersect and aren't in line to ever do so. Therefore, BC and DE and parallel.

The last option is AD and BC. These two lines will never meet, but, they aren't line up in the same directions. AD is traveling upwards while BC isn't. Think about being able to make a road out of the two lines, it would never work. AD and BC are not parallel.

To sum it up: You should select the 2nd and 3rd options because those lines are parallel.

I hope this was helpful, keep learning! :D

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Answer:

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Step-by-step explanation:

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2 years ago

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Step-by-step explanation:

Length of train A = 480m

Tunnel length = 1320m

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Difference between their speed = 18km/hr

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Speed = 1320 / 120 = 11m/s

Therefore, speed of train B :

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Relative speed of the two trains is therefore;

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( 11 + 6)m/s = 17m/s

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