Find the common ratio for each geometric sequence.
1. )
[tex] \frac{1}{5} \frac{2}{15} \frac{4}{45} \frac{8}{135} \frac{16}{405} [/tex]
r = ________
2.) 5, -10, 20, -40, 80
r = ________
3.) 36, -12, 4,
[tex] - \frac{4}{3} \frac{ 4}{9} [/tex]
1. )
[tex] \frac{1}{5} \frac{2}{15} \frac{4}{45} \frac{8}{135} \frac{16}{405} [/tex]
r = ________
2.) 5, -10, 20, -40, 80
r = ________
3.) 36, -12, 4,
[tex] - \frac{4}{3} \frac{ 4}{9} [/tex]
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Answer:
common ratio
1. 2/3
2. -2
3. -1/3