# Geometric Sequences - Page 2

Questions

- Is 10, 5, 2.5, 1.25, 0.625, 0.3125 a geometric sequence?
- If #f(x)=3x+4# and #g(x)=2(x+1)# then prove that #(fog)(x)=(gof)(x)#.?
- How do you find the common ratio for #10,5,5/2,5/4,5/8,...#?
- How do you write an nth term rule for #6,-30,150,-750,...# and find #a_6#?
- How do I find the 7th term of a geometric sequence for which #t_1 = 6# and #r = 4#?
- For what values of x will the infinite geometric series 1+ (2x-1) + (2x-1)^2 + (2x-1)^3 + ... have a finite sum?
- What are the next three numbers in the sequence: 5, 10, 20, 40, 80?
- How do you find two geometric means between 3 and 375?
- In a geometric sequence #t_3 = 45# #t_6=1215#, how do you find the first term?
- What is the 11th term of the sequence: 2, 8, 32, 128....?
- How do you find the common ratio of #-3,6,-12,24,...#?
- What is the sum of the first 6 terms of this geometric sequence –4, –16, –64, –256?
- Which term of the geometric sequence 2,6,18 is 118,098?
- A Geometric Sequence has 3rd term of 12 and 5th term of 48. What are the possible values for the common ratio?
- How do you find #a_9# when #a_1 = 1000, r = 1/3?#
- How do you write a rule for the nth term of the geometric sequence and then find #a_5# given #a_4=-3, r=-2#?
- How do you determine whether the sequence #1, -1/2, 1/4, -1/8,...# is geometric and if it is, what is the common ratio?
- How do you find the common ratio for #7,14,28,56,128,...#?
- Whats the missing term in the geometric sequence 2, __, 50?
- What is the 11th term of the geometric sequence –1, 3, –9, …?