The second term in geometric sequence is 20. The fourth term in the same sequence is 45/4 or 11.25. What is the common ratio in this sequence?
Answers
Answered by
1
Answer:
+/-3/4
Step-by-step explanation:
Let say 4 terms are
a ar ar^2 ar^3
ar = 20
ar^3 = 45/4
r^2= 45/(4×20)
r^2 = 9/(4×4)
r^2 = 9/16
r = +/- 3/4
Answered by
2
Answer:
Step-by-step explanation:
Common ratio is either 3/4 or-3/4
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