nayersonyafaninaA nayersonyafaninaA
  • 22-10-2016
  • Mathematics
contestada

What is the sum of the first five terms of a geometric series with a1 = 20 and r = 1/4?

Respuesta :

nobillionaireNobley
nobillionaireNobley nobillionaireNobley
  • 26-10-2016
sum of the first n terms of a geometric sequence is Sn = a(1 - r^n)/(1 - r)
Sn = 20(1 - (1/4)^5)/(1 - 1/4) = 20(1 - 1/1024)/(3/4) = 20(1023/1024)/(3/4) = 26 41/64
Answer Link
Nathanjj Nathanjj
  • 19-06-2021

Answer:

1705/64

Step-by-step explanation:

Ver imagen Nathanjj
Answer Link

Otras preguntas

______ tu contento hoy
What is the overall reaction order for this rate law: rate= k[A][B]?
Graph the function. Identify the vertex and axis of symmetry f(x) = –x2 – x + 2
Which of the following parts of an essay contains a topic sentence?
what is the rational number equivalent to 1.28 repeating
to condition your glutes , you might consider A: performing isometric spine extension exercise B: walking up hill as part of your morning routine C: playing ten
what promise caused the Constitution to be ratified?
Which of the following functions is a direct variation? f(x) = 2x f(x) = x + 2 f(x) = 2
use the geometric mean to find the 7th term in a geometric sequence if the 6th term is 12 and the 8th term is 27. a.18 b.19.5 c.20 d.17
which theme best reflects the ideals of modernist writers