What is r the common ration in the geometic sequence 2, -14, 98, -687

r is -7

Step-by-step explanation:

(I believe that you mistyped and meant that the fourth term in the sequence should be -686)

The easiest way to find the common ratio is to divide the numbers that are adjacent to each other

As you can see, when we divide a term by its previous term, we get -7 every time. This is our common ratio.

-22

times both sides by 2, times () by 8, add alile terms, move terms, add alike and caculate divide both sides by 3