Find the common ratio of the geometric sequence: -320,80,-20,5

Answer:-1/4 if you prefer the answer written as a fraction.-0.25 is you prefer the answer written as a decimal. Step-by-step explanation:Common ratio of a geometric sequence can be found by doing term divided by previous term.That is you could do:80/-320or-20/80or5/-20If all these ratios are not equal, it isn't a geometric sequence and does not have a common ratio.Let's see what these reduce to:80/-320=1/-4 =-1/4 or -0.25-20/80=-1/4 or -0.255/-20=1/-4=-1/4 or -0.25So the common ratio is -0.25 or yo you can write it as -1/4.