SOLUTION: Use the formula for the sum of the first n terms of a geometric sequence to solve. Find the sum of the first 11 terms of the geometric sequence 4,-12,36,-108....

Question 481815: Use the formula for the sum of the first n terms of a geometric sequence to solve.
Find the sum of the first 11 terms of the geometric sequence 4,-12,36,-108....
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!

 

Hi,

geometric sequence: {4,-12,36,-108,...}  r = -3



   

   

 

RELATED QUESTIONS

Use the formula for the sum of the first n terms of a geometric sequence to solve.... (answered by MathLover1)
Use the geometric sequence of numbers 1, 1/2, 1/4, 1/8,�to find the following:
a)What is  (answered by stanbon)
Use the formula for the sum of the first n terms of a geometric sequence.
find the sum... (answered by ewatrrr)
Use the geometric sequence of numbers 1, �, �, 1/8,�.to find the following:

 

a)     (answered by stanbon)
I am having a hard time figuring out this problem.

Use the geometric sequence of... (answered by stanbon,funmath)
Use the geometric sequence of numbers 1, 3, 9, 27, � to find the following:
a) 	What is... (answered by rmromero)
2) 	Use the geometric sequence of numbers 1, 3, 9, 27, � to find the following:

a)... (answered by stanbon)
I am having trouble with this problem, could you please help me.

3)	Use the geometric... (answered by sdmmadam@yahoo.com)
3)	Use the geometric sequence of numbers 1, 1/3, 1/9 , 1/27… to find the following.
 (answered by sdmmadam@yahoo.com)