Wow you really can't spell.
The nth term of the sequence is 3n-8 and so the 30th term is 3*30 -8 = 82
There are not enough numbers to be certain. The rule for the nth term could be Subtract 6 from the previous term giving 30, 24, 18, etc or Multiply previous term by 0.8 giving 30, 24, 21.6, etc etc
19/307/10 - 1/15 := (7/10 * 3/3 )- (1/15 * 2/2)= 21/30 - 2/30= 19/30
No, that's 7/10
6n+10
3 x 10(n-1)
Say if you had the pattern 15 20 25 30 35 40 45 50 To find the nth term you have to see what the gap between the numbers is. In our case this is 5. Then you have to find out what the difference between the gap and the first number. In this sequence it is 10. So your answer would be..... 5n+10 That's how you find the nth term.
This is an arithmetic progression. In general, If an A.P. has a first term 'a', and a common difference 'd' then the nth term is a + (n - 1)d. In the sequence shown in the question, the first term is 0 and the common difference is 5, therefore the nth term is, 0 + (n - 1)5. This can be rearranged to read : 5(n - 1) For example : the 7th term is 30 : 5(7 - 1) = 5 x 6 = 30.
Clearly here the nth term isn't n25.
90
When n=30, 3n-1 = 89 .
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
The nth term is 7n-5 and so the 6th term will be 37
The series formula is, Tn = 2n2 - 3n + 10. The sequence continues, n = 5, T5 = 50 - 15 + 10 = 45 n = 6, T6 = 72 - 18 + 10 = 64 Notice that the difference in successive terms is increasing by 4 at each step.
Just plug in 30 for n in 3n-1. The answer is 89.
n(n+1)