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Angelina_Jolie [31]
3 years ago
5

Question

Mathematics
1 answer:
Ahat [919]3 years ago
8 0

Answer:

4 minutes.

Step-by-step explanation:

There are three trains that Rachel has to take to go to her job. The total time is taken by her, on average, 1 hour and 20 minutes i.e. (60 + 20) = 80 minutes.

In his journey, she walks for 15 minutes and a train journey for about 53 minutes.

Then the total waiting time for the trains is (80 - 53 - 15) = 12 minutes.

Therefore, the average waiting time, in minutes, at each of the three train stations will be \frac{12}{3} = 4 minutes. (Answer)

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Answer:

2 y^3

Step-by-step explanation:

Area of rectangule is length * width

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2 years ago
What is the simplified form of 2(3x+5)-30+7x_4
Kipish [7]

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Step-by-step explanation:

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3 years ago
Two trains travel at right angles to each other after leaving the same train station at the same time. Two hours later they are
Alex787 [66]

Answer:

15 miles per hour is the speed of the slower train.

Step-by-step explanation:

As given in the figure attached,

Let the speed of train 1 is v and train 2 is u.

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and distance traveled by train 2 will be = 2u miles

Now we can see in the figure a right angle triangle is formed by the two trains.

AB² + BC² = AC²

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4v² + 4u² = 4264.09

Now we divide this equation by 4

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If speed of the slower train is v miles per hour then as per statement of the question.

u = v - 14

v = u + 14

By putting the value of v in the equation

(u + 14)² + u² = 1066

u² + 196 + 28u + u² = 1066

2u² + 28u + 196 = 1066

2u² + 28u + 196 - 1066 = 0

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By diving this equation by 2

u² + 14u - 435 = 0

u² + 29u - 15u - 435 = 0

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Since speed can not be with negative notation so u = 15 miles per hour will be the speed.

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5 0
3 years ago
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Steps to solve:

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6 0
3 years ago
I dont get how to do this one
harina [27]

Answer:

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3 0
2 years ago
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