Respuesta :

kudzordzifrancis

Answer:

neither arithmetic nor geometric

Step-by-step explanation:

The given sequence is

[tex]99,89.9,78.8,68.7,...[/tex]

[tex]89.9-99=-9.1[/tex]

[tex]78.8-89.9=-11.1[/tex]

The differences are not the same so this cannot be an arithmetic sequence.

[tex]\frac{89.9}{99}=\frac{899}{990}[/tex]

[tex]\frac{78.8}{89.9}=\frac{788}{899}[/tex]

The ratios are not the same so it can also not be geometric.

The sequence is neither arithmetic nor geometric.

zainebamir540

Answer:

Choice B is correct.

Step-by-step explanation:

We have given a sequence:

99,89.9,78.8,68.7,............

We have to describe the type of sequence.

First,to check is it a arithmetic:

89.9 - 99 = -9.1

78.8 - 89.9 = -11.1

The common difference is not same so, this cannot be arithmetic sequence.

To check is it a geometric or not.

89.9/99 = 899/990

78.8/89.9=788/8990

The common ratio  is not same so, it is not geometric.

Choice B is correct.

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