Homework Help: Math

Posted by azmeerahim on Friday, January 18, 2013 at 2:49am.

Given a geometric progression:
0.05, 0.2, 0.8, ... Find the sum from the 5th term to the 8th term?

Math - Steve, Friday, January 18, 2013 at 4:51am
That would be S8 - S4
Since r = 4

.05(4^8-1) - .05(4^4-1) = 3264
Math - azmeerahim, Friday, January 25, 2013 at 12:44pm
a=0.05
r=4
S8=0.05(4^8-1)/3=1092.25
S4=0.05(4^4-1)/3=4.25

Sum from 5th term to 8th term is
S8-S4=1088

Related Questions

Geometric progression - The second term of a geometric progression is 12 more ...
GP Caluculus - The third term of a geometric progression is 16. The sum of the ...
GP Caluculus - The third term of a geometric progression is 16. The sum of the ...
GP Caluculus - The third term of a geometric progression is 16. The sum of the ...
math - 1) If the number 1,1/3,1/9, are terms of Geometric progression. Find its ...
Math - the sum of the 4th term and the 5th term is 12.if the 4th term of the ...
math - find the sum of the first 8th term of the Geometric progression, 1,3,9,27
Maths - 1) In the arithmetic progression, the 8th term is twice the 4th term and...
math - If the sum of the first and the second terms of an infinite Geometric ...
math - in a Geometric progression the sum of the first and the second terms is ...

For Further Reading

First Name:
School Subject:
Answer: