15 ocket is being launched. After a while, it rises at a constant velocity of 10 miles per second. An obs anding 15 miles from the launching site. How fast is the distance between the rocket and the observ anging when the rocket is at a height of 8 miles? Present your answer as an approximation, accurate ree or more decimals.

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Sequence and Series

A sequence is defined as a collection of things. Series is defined to sum the things one by one in the sequence.  It was invented by German mathematician Carl Friedrich Gauss.