3 years ago

Find the common ratio of the geometric sequence 18,-90,450,...

Mathematics

2 answers:

Harlamova29_29 [7]3 years ago

7 0

Answer:

-5

Step-by-step explanation:

The common ratio is what you have to multiply one term by to get the next term.

so:

$18 \times r = -90\\-90 \times r = 450$

where r is the common ratio

We can solve these equations:

-90 / 18 = -5

450/-90 = -5

therefore the common ratio is -5

svetlana [45]3 years ago

3 0

Answer:

try looking it up on socratic

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