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Yuliya22 [10]
3 years ago
7

CHECK MY ANSWERS PLEASE

Mathematics
1 answer:
ZanzabumX [31]3 years ago
8 0

Answer:

1. False 2. True

Step-by-step explanation:

For a geometric sequence,

\dfrac{a_2}{a_1}=\dfrac{a_3}{a_2}

1. The sequence is :

3, 13, 23, 33,...

\dfrac{13}{3}\ne \dfrac{23}{13}

It is not geometric. It is false

2. The sequence is :

5, -25, 125, -625

\dfrac{-25}{5}=\dfrac{125}{-25}\\\\-5=-5

So, the sequence is geometric as the common ratio is same. It is true.

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