Answer:
r ( common ratio) = 1.75
Step-by-step explanation:
Given : geometric sequence 4, 7, 12.25, 21.4375.
To find : What is the r value .
Solution : We have given
Geometric sequence 4, 7, 12.25, 21.4375.
r ( common ratio) = [tex]\frac{second\ term}{first\ term}[/tex].
r ( common ratio) = [tex]\frac{7}{4}[/tex] = 1.75
r ( common ratio) = [tex]\frac{12.25}{7}[/tex] = 1.75
Therefore, r ( common ratio) = 1.75
