Identify whether these series are divergent or convergent geometric series and find the sum, if possible.

A geometric series:

It's convergent if |r|<1.
It's divergent if |r|≥1.
The sum can be found if it's a convergent series; it's equal to .

3.


The answer is: This is a convergent geometric series. The sum is 30.

4.


The answer is: This is a divergent geometric series. The sum cannot be found.

the law of definite proportions states samples of a compound will always contain the same proportion of elements by mass. in other words, a given compound will always contain the same elements in the same proportions by mass.the law of multiple proportions states when two elements combine with each other to form more than one compound, then the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.