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nirvana33 [79]
4 years ago
11

Please help. This question is on geometric sequences

Mathematics
1 answer:
Lyrx [107]4 years ago
4 0

Answer:

13.89 to 2 dec places.

Step-by-step explanation:

a7 / a5 = r^2   where r is the common ratio.

So 3/5 = r^2

r^2 = 0.6

r = +√0.6

r = 0.7746.

The first term is a5 / r^4

= 5 / (0.7746)^4

= 13.89.

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