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Serjik [45]
3 years ago
7

Given the geometric sequence: -880, -220, -55,... the next term in the sequence is?

Mathematics
2 answers:
Artist 52 [7]3 years ago
8 0

Answer: -13.75

Step-by-step explanation:

In geometric sequence a , ar , ar^2 , ar^3 , where each term is given by :-

T_n=ar^{n-1} , where r= common ratio

a= first term.

n= Number of term

The given  geometric sequence : -880, -220, -55,...

First term : a=-880

Second term : ar=-220

Now  , r=\dfrac{ar}{a}=\dfrac{-220}{-880}=\dfrac{1}{4}

Now , the next term will be the 4th term , so for n=4 , we have

Fourth term =ar^{4-1}=ar^3

Put value of a and r , we get

Fourth term =(-880)(\dfrac{1}{4})^3=\dfrac{-880}{64}=-13.75[/tex]

Hence, the next term in the sequence is -13.75 .

juin [17]3 years ago
3 0
The next term in the sequence is -13.75.
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