Question

http://prntscr.com/az0g97

Answer 1

so i know its convergent

Answer 2

A? bc of ∞

Answer 3

Yes its convergent

Sum to infinity = a1 / 1 - r

a1 = fist term r = common ratio

Answer 4

so i find that?

Answer 5

@jhonyy9

Answer 6

i think like before you can try it step by step

8 + (8*5/6 = 20/3) + (8*25/36 = 50/9) + (8*125/216 = 27*125 = 3375 +...

so i think from these result that the 3rd and 4th you can eliminate sure - yes ?

Answer 7

yes i think and i agree your answer that is choice A. right

Answer 8

wait but how would you tell if you couldnt find the sum?

Answer 9

so bc. i=1 till infinite so from this result that the sum not can be founded - or not ?

Answer 10

bc. there are the first 2 choices with these possibilities - yes ?

Answer 11

so the ∞ is what makes the sum not found?

Answer 12

yes sure bc, we not can calculi the sum of these numbers - again - what begin with 1 and go till infinite - or you know a way what will give to you possibilitie to calculi one sum started with 1 and go till infinite ? i think not possibile

Answer 13

ok. ?

Answer 14

okay thanks c:

Answer 15

Rebecca please wait one moment i think i have missed anything

Answer 16

@rebeccaxhawaii

Answer 17

8 + (8*5/6 = 20/3) + (8*25/36 = 50/9) + (8*125/216 = 125/27) + ....

8
4*5/3
2*(5/3)^2
(5/3)^3
...

Rebecca how you see it now do you can continue it ?

Answer 18

what will be the next term of this line ?

Answer 19

sorry i have to go for now .. thanks for all your help though c:

Answer 20

ok. but hope you see about what i talking now here - yes ?

Answer 21

the next term will be

8*(5/3)^4 = 8* 625/81 =