Question

\[\sum_{i=1}^{8}\] 25(1/2)^i-1

Answer 1

I can do that..... not step by step, but I canget the answer :)

Answer 2

thats fine :) im not going to complain ;)

Answer 3

is it 25 * (1/2)^i -1? its hard to tell from this angle

Answer 4

or is the exponent (i-1)?

Answer 5

yes (: it is the exponent

Answer 6

25(1/2)square root i-1

Answer 7

ok.....

(25 * ((1 / 2)^(1 - 1))) + (25 * ((1 / 2)^(2 - 1))) + (25 * ((1 / 2)^(3 - 1))) + (25 * ((1 / 2)^(4 - 1))) + (25 * ((1 / 2)^(5 - 1))) + (25 * ((1 / 2)^(6 - 1))) + (25 * ((1 / 2)^(7 - 1))) + (25 * ((1 / 2)^(8 - 1))) = 49.8046875


sqrt(i-1)?\[25 * (1/2) \sqrt{i-1}\]

Answer 8

you gotta give me the right equation lol.....what is it :)

Answer 9

if you can take a screen shot of the problem and post it as an attachment; thats prolly best.

Answer 10

you know how to do a screen shot?

Answer 11

nope. can you tell im clueless -_-

Answer 12

press this button on your keyboard

Answer 13

open up paint

Answer 14

paste the picture into the paint program

Answer 15

save it to your desktop

Answer 16

name it

Answer 17

hi amistre64...could use your help when you're done ; )..sorry for intruding mamabeart88

Answer 18

attactch and post :)

Answer 19

Does that make sense :)

Answer 20

ok btm ;)

Answer 21

woww! mmk lemme try
!
thanks amistre64! i never knew you could do that :D

Answer 22

you never knew "I" could do that? lol

Answer 23

AHAHA; wow apparently my grammer isnt any better -_-

Answer 24

ok.... I can do that :)

Answer 25

thats what I did before :) and got:

49.8046875