puppylover1316 puppylover1316
  • 23-05-2021
  • Mathematics
contestada

What is the sum of the first ten terms in a geometric series
with a1=
6 and r = 2?

Respuesta :

MrRoyal
MrRoyal MrRoyal
  • 28-05-2021

Answer:

[tex]S_{10} = 682[/tex]

Step-by-step explanation:

Given

[tex]a_1 = 6; r = 2[/tex]

Required

[tex]S_{10[/tex]

This is calculated as:

[tex]S_n = \frac{a(r^n - 1)}{r - 1}[/tex]

So, we have:

[tex]S_{10} = \frac{6 * (2^{10} - 1)}{10 - 1}[/tex]

[tex]S_{10} = \frac{6 * (1024- 1)}{9}[/tex]

[tex]S_{10} = \frac{6 * 1023}{9}[/tex]

[tex]S_{10} = 682[/tex]

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