Question

Find a general formula for the nth term of the geometric series with:

Answer 1

\[a _{5}=1/5.......r=1/2\]

Answer 2

@Michele_Laino

Answer 3

please use this formula in order to get a_1:
\[{a_5} = {a_1}{r^4}\]

Answer 4

ok

Answer 5

could you show me how to do these but not the answer after you do the work I will figure out the answer?

Answer 6

if no then i'll do it

Answer 7

here is your step:
\[{a_1} = \frac{{{a_5}}}{{{r^4}}} = \frac{{1/5}}{{{{\left( {1/2} \right)}^4}}} = ...?\]

Answer 8

ok that would be 16/5 or 3 1/5

Answer 9

that's right!

Answer 10

so its a=16

Answer 11

now, please keep in mind that the general term a_n is given by the subsequent formula:
\[{a_n} = {a_1}{r^{n - 1}}\]

Answer 12

\[a _{n}=16 \left( 1/2 \right) ^{n-1}\]

Answer 13

no, I think:
\[{a_n} = {a_1}{r^{n - 1}} = \frac{{16}}{5}\frac{1}{{{2^{n - 1}}}}\]

Answer 14

since a_1 = 16/5

Answer 15

so 4

Answer 16

a =2

Answer 17

pleae your answr is:
\[{a_n} = {a_1}{r^{n - 1}} = \frac{{16}}{5}\frac{1}{{{2^{n - 1}}}}\]

Answer 18

but thats not a optiion

Answer 19

I don't see your options

Answer 20

well a=4 ...... a=8 ....... a=16 ...... a=2

Answer 21

all have (1/2)

Answer 22

sorry what is a?

Answer 23

and n what is?

Answer 24

please, the general term has to depend on n

Answer 25

ok so its what then

Answer 26

I think that your answer is:
\[{a_n} = \frac{{16}}{5}\frac{1}{{{2^{n - 1}}}}\]

Answer 27

so its the 16 one kk gotcha thxs

Answer 28

thanks!

Answer 29

Find an equivalent fraction for the repeating decimal:

Answer 30

\[0.218\]

Answer 31

hmm maybe 72/330

Answer 32

please I can write this:
\[0.218 = \frac{{218}}{{1000}} = \frac{{109}}{{500}}\]

Answer 33

ok well u got it because a answer was 218/1000

Answer 34

since
\[\frac{{72}}{{330}} = \frac{{24}}{{110}} = \frac{{12}}{{55}}\]
then your answer can not be a right answer

Answer 35

well the choices are 72/330

Answer 36

218/1000

Answer 37

7/330

Answer 38

126/330

Answer 39

it has to be B

Answer 40

please wait are your repeated decimal 1 and 8?

Answer 41

yes 0.218

Answer 42

ok! then your ratio is:
\[\frac{{218 - 2}}{{990}} = \frac{{216}}{{990}} = \frac{{72}}{{330}}\]

Answer 43

u said 218/1000 before

Answer 44

but ok

Answer 45

since I don't understood your question, sorry!

Answer 46

its ok dude i dont either i feel dumb hahhaha

Answer 47

converge or diverge

Answer 48

new question dude sorry