What is the 43rd term of an arithmetic sequence with a rate of increase of -6 and a11 = 12? A)-174 B)-176 C)-180 D)-186 E)-240
@caleb_gajewsky
_>_<_
I don't understand the "a11 = 12" part :/
\[a ^{11} =12\]
@dan815
sorry qt
\[a_11=12 \\ a_12=12-6=6\\a_{13}=6-6=0 \\ a_{14}=0-6=-6\\ a_{15}=.....\\.\\.\\.\\.\\ a_{43}=?\]
how many times will we hhave to subtract 6? to get from term 11 to term 43
Think about that and get back to me with the answer :)
idk
omg idk and im stuck on a test todays the last day please give me the answers i know normally you shldnt and normally i dont ask for just answers but i need them now omg D:
okay lets see how many numbers are betwen 11 to 43
*summer* T_T
pay attention then
omg im about to fail
-186?
we are subtracting from the 12th term so... 12 to 43 is how many numbers if i subtract 11 from 12 and 11 from 43, that wont change the total numbers i have 12-11 to 43 -11 1 to 32 <---- so there are a total of 32 numbers between from 12 to 43
i have 1 more minute to answer this question
we are subtracting 32 times from 12 12-(32*6)=-180
it logged me out before i could finish omg D;
but thanx i know how to do it now
:) dont feel bad
*hug*
*runs his fingers through his beautiful hair*
lol
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