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A geometric sequence has only positive terms. The third term is 6 and the fith term is 150. Find the common ratio.

User Skeryl
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Final answer:

The common ratio of the geometric sequence with the third term being 6 and the fifth term being 150 is found to be 5.

Step-by-step explanation:

The student is asking to find the common ratio of a geometric sequence with positive terms, where the third term is 6 and the fifth term is 150. To solve this, we can use the formula for the nth term of a geometric sequence, which is an = a1 × r(n-1), where a1 is the first term and r is the common ratio.

Since we know the third and fifth terms, we can create the following equations:

  1. a3 = a1 × r2 = 6
  2. a5 = a1 × r4 = 150

Dividing the second equation by the first equation gives us r2 = 150/6 = 25. Therefore, the common ratio r is the square root of 25, which is 5.

User Cocoakomali
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