Question

Find the sum of the geometric sequence.

1, one divided by four, one divided by sixteen, one divided by sixty four, one divided by two hundred and fifty six

Answer 1

1/4 +1/16 +1/64
these terms are in 4's power

Answer 2

can you tell me whats the common ratio

Answer 3

honestly i dont know

Answer 4

to find the common ratio, take the second term and divide it by the first term.
(1/16) / (1/4 =
1/16 * 4/1 =
4/16 = 1/4
so the common ratio is 1/4.

Is this all the numbers ? Is there only 4 numbers that are trying to find the sum of ?

Answer 5

there 5 number 1, 1/4 ,1/16, 1/64 , 1/256

Answer 6

oh...1 is the first term ?

Answer 7

yes

Answer 8

so

Answer 9

yes still the same ratio

Answer 10

so what is the the sum of the geometric sequence.

Answer 11

you cant make bricks without clay,you cant make buildings without bricks
data data!
how can you find something without data

Answer 12

you have the ratio now
now formula is
a(1-r^n/1-r)

Answer 13

first term is 1
r= 1/4

Answer 14

and n is 5

Answer 15

so sum will be (1-1/256)/1-1/4

Answer 16

so 255/4 *4/3 = 255/3 = 85

Answer 17

thats ur sum

Answer 18

341/256 is the answer.
I just took the test and got it right.