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Basile [38]
3 years ago
15

PLEASE HELP ME WITH THIS FAST!!!!

Mathematics
2 answers:
mote1985 [20]3 years ago
7 0

Answer:

Step-by-step explanation:

Second bullet point

klasskru [66]3 years ago
6 0
The first one is correct
- Ac=de, x=5

Because 4x-2=22.
X=5
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Two trains started moving at the same time, train A from Boston to New York, and train B from New York to Boston. The distance b
Ede4ka [16]

Answer:

  • <u>After 1.7 hours</u>

Explanation:

<u>1. Calculate the average speed of train B</u>

  • 60mph = 3/4 (s) ⇒ s = 60 (4/3) mph = 80 mph

<u>2. Build a table</u>

When the two trains meet:

Train     Average speed     Distance       time (distance/average speed)

                 mph                            

A                 60                             x                        x/60

B                 80                        240 - x                (240 - x) / 80

<u>3. Write the equation</u>

The time, when the two trains meet, is the same for both trains:

                  \dfrac{x}{60}=\dfrac{240-x}{80}\\ \\ \\ 80x=14,400-60x\\ \\ 80x+60x=14,400\\ \\ 140x=14,400\\ \\ x=14,400/140\\ \\ x=102.85miles

<u>4. Calculate the time:</u>

  • x/60 = 102.86 / 60 = 1.7 hours

The two trains will meet after 1.7 hours

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Step-by-step explanation:

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I was stuck on the same thing in my class test. I ended up failing but if I get the answers to it I’ll totally send them to you
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