Find an explicit formula for the arithmetic sequence 12, 5, -2, -9..

Step-by-step explanation:

The explicit formula for an arithmetic sequence is given by :-

                 (1)

, where a = first term

d= common difference

n= number of term

The given arithmetic sequence =  12, 5, -2, -9..

First term : a = 12

Common difference : d= 5-12=-7   [Difference between any two consecutive terms.]

Put a = 12 and d= -7 in (1) , we get

Hence, the explicit formula for the given arithmetic sequence :    

We we solve it further , we get

Required explicit formula :    

answer: no

step-by-step explanation:

you are only given the cost not the amount of pounds.

aloha~! my name is zalgo and i am here to you out on this amazing day. to answer your question, yes, nonzero numbers can have a greatest common factor and that would be 1. still don't get it? let me considering every number is divisible by 1 and hence every number has 1 as a factor of theirs. so, if 2 nonzero numbers didn't share any gcf (greatest common factor), they would still have a factor in common and that would be 1.

i hope that this ! : p

"stay and stay proud! " - zalgo

(by the way, do you mind marking me as brainliest? i'd greatly appreciate it! mahalo! x3)