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lara [203]
3 years ago
5

What’s the simplified form of -3+7–3r–12

Mathematics
1 answer:
VashaNatasha [74]3 years ago
5 0

Answer:

-3r-8

Step-by-step explanation:

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two passenger train traveling in opposite directions meet and pass each other. Each train is 1/18 miles long and is traveling at
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Answer:

  5 seconds

Step-by-step explanation:

Suppose the front parts of the trains meet at point A. Since both are the same length and traveling the same speed, each will pass point A in time ...

  time = distance/speed

  time = (1/18 mi)/(40 mi/h) = (1/720 h) × (3600 s)/(1 h) = 5 s

That is, the rear part of each train will be at point A 5 seconds after the front part.

The rear parts will pass each other 5 seconds after the front parts meet.

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Linear- blue graph, table 2, 2x-3y=7, y=3\x +2, y=-4
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$171.45

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3 years ago
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Kipish [7]

Answer:   \bold{-7+2\sqrt{14}+5\sqrt{7}-10\sqrt{2}}

<u>Step-by-step explanation:</u>

\dfrac{\sqrt7-5}{\sqrt7+\sqrt8}\bigg(\dfrac{\sqrt7-\sqrt8}{\sqrt7-\sqrt8}\bigg)=\dfrac{7-2\sqrt{14}-5\sqrt{7}+10\sqrt2}{7-8}=\dfrac{7-2\sqrt{14}-5\sqrt{7}+10\sqrt2}{-1}\\\\\\=\boxed{-7+2\sqrt{14}+5\sqrt{7}-10\sqrt2}

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The answer is: False

This does not mean that AD will be congruent to BC because AD and BC has the same specific angle and volume.

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