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Natasha2012 [34]
3 years ago
5

Find the first,fourth, and eight terms of the sequence. a(n)=-2x5^n-1

Mathematics
1 answer:
ANTONII [103]3 years ago
5 0
First term  = 2 x 5(1-1) =   2 x 1 = 2
4th term  = 2 x 5^3 =   250
8th term = 2 x 5^7  =  156,250
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Step-by-step explanation

The formula that I used

A=πr^2

Area  = π·5.5^2 ≈ 95.03318

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Step-by-step explanation:

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