what is the common ratio of 3.21.147
Answer (1)
Answer:7Step-by-step explanation:[tex]$$ a_n = a_1 \cdot r^{(n-1)} $$[/tex][tex]a_3[/tex]=(3)[tex]r^3^-^1[/tex]147=(3)[tex]r^2[/tex]147=[tex]3r^2[/tex]49=[tex]r^2[/tex]Square both sides [tex]\sqrt{49} =\sqrt{r^2}[/tex]7=rIf you want the easy way, you can just divide them haha, 147/21 = 721/3 = 7Therefore, the answer is 7
