raymundo2
raymundo2 raymundo2
  • 15-06-2017
  • Mathematics
contestada

Find the sum of the first 6 terms in the sequence -5 -25 -125 -625

Respuesta :

steve77 steve77
  • 15-06-2017
This is a geometric sequence, so use the formula for the sum of a geometric sequence:
Sum = (a(r^n - 1))/(r - 1)
where a is the first term, -5
r is the common ratio, 5
and n is the number of terms

Thus,
Sum = ((-5)(5^6 - 1))/(5-1) = -19530
Answer Link

Otras preguntas

Which of the following demonstrates forces that change the motion of an object?
What is the opening theme in the Prologue (Intro) to Warriors Don’t Cry NO WORK = NO CREDIT = REPORT
Please help me! I need to pass religion so please newer this
solve:1 + 0 = ?4 + 0 = ?3 + 0 = ?do you get it?​
convert into slope intercept form, show all work x-2y=0
Evaluate x + 4x when x = 20.
A. Do you expect polar or nonpolar liquids to form the roundest drops?
PLEASE HELP ASAP IM TIMED!
Pleaseeeee help I suck at math The sum of the interior angle measures of a convex polygon is 1080°. How many sides does it have?
Complete the puzzle so that each row, column, and diagonal adds up to the same total.