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Help please!!!!!!!!.

Help please!!!!!!!!.-example-1

1 Answer

4 votes

Answer:

3

Explanation:

You want the middle term of the geometric sequence 6, __, 3/2.

Middle term

The first term of this sequence is a1. With common ratio r, the first three terms are ...

  • a1
  • a1·r
  • a1·r²

If we multiply the first and third terms, we get ...

(a1)(a1·r²) = (a1)²·r² = (a1·r)² . . . . . the square of the middle term

Then the middle term is ...

a1·r = √(6·3/2) = √(18/2) = √9 = 3

The middle term of the sequence is 3.

__

Additional comment

That lets us see that the common ratio is r = 3/6 = 1/2.

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