anonymous
  • anonymous
What is the common ratio of the following geometric sequence? 5, 15, 45,... any help please? math is hard for me .
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
The common ratio is determined by dividing and term by the term immediately preceding it. In general,\[r=\frac{ a_n }{ a_{n-1} }\]In your question you could use\[r=\frac{ 15 }{ 5 }\]or\[r=\frac{ 45 }{ 15 }\]
anonymous
  • anonymous
i got r=3 for both, so that would be the ratio?
anonymous
  • anonymous
That's right. In a geometric sequence, the common ratio is the same no matter which two terms you use. That's why it's called a "common" ratio.

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anonymous
  • anonymous
ohh okay! idk why online school makes this so hard to understand
anonymous
  • anonymous
There's lots of folks here that can help you understand anything you're not sure about.
anonymous
  • anonymous
i know, thank you again, is it okay if i tag u in other questions i may have? or just to have someone else check my anwser?

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