What is..

Question

What is..

alones · Answer

What is the fifth term of the sequence whose first term is 10 and whose common ratio is ?
not sure but i think it should be 50

bexster · Answer

is there anymore info?

gabbyalicorn · Answer

^

bexster · Answer

is this arithmetic sequences ?

xeno · Answer

its a geometric sequence bc they are talking about "common ratio"

alones · Answer

yeaa

alones · Answer

No that's all i have :3

xeno · Answer

the common ratio must be given if they are asking you about 5th term
so question seems incomplete

xeno · Answer

how are you getting 50?

anonymous · Answer

yeah is it 1/2

alones · Answer

I actually did this, 5*10.. my bad /.<

ganeshie8 · Answer

`...  and whose common ratio is ?`


looks some info is lost while copy pasting the question, double check...

alones · Answer

Mkay let me copy word for word ._.

ganeshie8 · Answer

take a screenshot and attach if psble

alones · Answer

What is the fifth term of the sequence whose first term is 10 and whose common ratio is  $$\frac{ 1 }{ 2 }$$?

alones · Answer

Das better?

ganeshie8 · Answer

yeah that 1/2 was missing earlier

ganeshie8 · Answer

use the nth term formula of geometric sequence : 

$$a_n = a_1*r^{n-1}$$

alones · Answer

Yea i jsut noticed it now xP

ganeshie8 · Answer

plugin :

$a_1 = 10$
$r=1/2$
$n=5$

alones · Answer

Okay let me try,

wait all together?

bexster · Answer

yes plug them into the formula that gansh gave you and it will give you a_n

alones · Answer

$$A(10) = a·1/2(^n - ^1)$$like this?

bexster · Answer

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