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Valentin [98]
3 years ago
9

The first term of a geometric sequence is 10,000 and the common ratio is 0.4. What

Mathematics
1 answer:
Misha Larkins [42]3 years ago
7 0

a = 10000

r = 0.4 = 4/10 = 2/5

a_9 = ar^8 = 10000 × 2^8/5^8

a_9 = 10000 × 256/(25 × 25 × 25 × 25)

a_9 = 6.5536

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Find the 96th term of the arithmetic sequence 1, -12, -25, ...1,−12,−25,
IrinaK [193]

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a_9_6=-1,234

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we know that

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a_n=a_1+d(n-1)

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d is the common difference

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n is the number of terms

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1,-12,-25,...

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so

a_1=1\\a_2=-12\\a_3=-25

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