lasagna73 lasagna73

24-06-2019
Mathematics

contestada

Determine 8th term in the
geometric sequence whose first
term is -10 and whose common
ratio is 2.

Respuesta :

jimrgrant1 jimrgrant1

24-06-2019

Answer:

- 1280

Step-by-step explanation:

The n th term of a geometric sequence is

[tex]a_{n}[/tex] = a₁ [tex](r)^{n-1}[/tex]

here a₁ = - 10 and r = 2, hence

[tex]a_{8}[/tex] = - 10 × [tex]2^{7}[/tex] = - 10 × 128 = - 1280

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