How do u write 3 less than the product of 4 and a number
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Answer:
20 units
Step-by-step explanation:
Plot points on a graph. doesn't have to be to scale. check co-ordinates differences and add up. see image.
Let be the speed of train A, and let's set the origin in the initial position of train A. The equations of motion are
where are the positions of trains A and B respectively, and t is the time in hours.
The two trains meet if and only if , and we know that this happens after two hours, i.e. at
Solving this equation for v we have
So, train A is travelling at 105 km/h. This implies that train B travels at