3 years ago

What is the 6th term in this geometric sequence? 5, -15, 45, -135

Mathematics

1 answer:

olga nikolaevna [1]3 years ago

8 0

Answer:

-1215.

Step-by-step explanation:

For a geometric sequence:

nth term = a1 r^(n-1)

The first term a1 = 5 and the common ratio r = -15/5 = -3.

So 6th term = 5 * (-3)^(6-1)

= 5 * (-3)^5

= -1215.

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