Two trains leave the station at the same time, one heading east and the other west. The eastbound train travels at 55 miles per
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In this exercise we have to use the knowledge of geometric progression to find three specific numbers, in this way we can say that these numbers correspond to;
Then using the formula of the geometric progression we find that:
now, the differences between the terms must be the same:
and now, when we increase the third term by 9,so we have:
Now we use that identity in the first equation :
The general solution for a quadratic equation is
We have that:
- a = 25
- b = -104
- c = 16
so, put the numbers in the formula we find:
See more about geometric progress at brainly.com/question/14320920