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Ulleksa [173]
3 years ago
11

A population of values has a normal distribution with u = 69.4 and o = 18.9. You intend to draw a random

Mathematics
1 answer:
Firlakuza [10]3 years ago
3 0

Answer:

234

Step-by-step explanation:

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Two passenger train, A and B, 450 km apart, star to move toward each other at the same time and meet after 2hours.
likoan [24]

Let v be the speed of train A, and let's set the origin in the initial position of train A. The equations of motion are

\begin{cases}s_A(t) = vt\\s_B(t) = -\dfrac{8}{7}vt+450\end{cases}

where s_A,\ s_B are the positions of trains A and B respectively, and t is the time in hours.

The two trains meet if and only if s_A=s_B, and we know that this happens after two hours, i.e. at t=2

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