Question

help me please step by step? picture posted below:)

Answer 1

@timo86m

Answer 2

\(\large \bf \Sigma_{k=1}^6\ -4\left(\frac{1}{3}\right)^{k-1}\quad ?\)

Answer 3

i dont know what that means..

Answer 4

well... is it a 6 or a 9 or.... ? I mean. it looks like is a "6" laying on its back taking a break

Answer 5

what?

Answer 6

the infinity sign??

Answer 7

ohh is an infinity sum...

Answer 8

@jdoe0001 ?

Answer 9

hmm dunno

Answer 10

so u cant help me?

Answer 11

@timo86m ??

Answer 12

Do you know the rules of sigma notation?

Answer 13

no

Answer 14

http://www.mathsisfun.com/algebra/sigma-notation.html

Read this.

And then loook up geometric series :)

Answer 15

Your thing is like this