There are infinitely many possible answers. But the simplest is
Un = 33 - 3n for n = 1, 2, 3, ...
The nth term is (36 - 4n)
7n - 4
24 - 6n
Give the simple formula for the nth term of the following arithmetic sequence. Your answer will be of the form an + b.12, 16, 20, 24, 28, ...
If 3 is the first term, then the nth term is [ 3 x 2(n-1) ] .
The nth term is (36 - 4n)
7n - 4
24 - 6n
Give the simple formula for the nth term of the following arithmetic sequence. Your answer will be of the form an + b.12, 16, 20, 24, 28, ...
You can see that all the numbers go up by 7. This means that the first part of the nth term rule for this sequence is 7n. Now, you have to find out how to get from 7 to 3, 14 to 10, 21 to 17 ... this is because we are going up in the 7 times table. To get from the seventh times table to the sequence, you take away four. So the answer is : 7n-4
If 3 is the first term, then the nth term is [ 3 x 2(n-1) ] .
The nth term is 7n-4 and so the next number in the sequence is 31
The nth term in the arithmetic progression 10, 17, 25, 31, 38... will be equal to 7n + 3.
If 3 is the first term, then the nth term is [ 3 x 2(n-1) ] .
2n(n+1)
8 + 4n
If you mean: 34 39 24 ... then the nth term is 39-5n and so the 100th term = -461