In Math / Junior High School | 2024-09-07

A. Determine whether arithmetic or not if yes write the common difference.

1. 3, 8, 13, 18...
2. -12, -8, -5, -1...
3. 2, 3, 5, 7...
4. 1/2, 2/3, 3/4...
5. 0.6, 3.1, 5.6,8.1...

B. Find the specified term in each arithmetic sequence.

6. 3,5,7... the 21st term
7. -11, - 7, -3,... the 23rd term
8. In the sequence 2,6,10,... which term has a value of 286?
9. 5th term if a15= 29 and a27 = 47
10. If a1= -4, a25= -100, a101=?

C. Find the missing term.

11. 1,___, 1/5
12. 8, _,___,___,20
13. _,_,1/2,__,__,2
14. _,__,__,17,23,29
15. -4,___,___,5

D. In each arithmetic series, find the unknown

16. Sn=195, an =33, d=3, a1=?
17. Sum of integers between 6 to 30
18. a10= 27.5, d=3, a1=?, Sn =?
19. Sn=119, a1=5, d=4, n=?

20. Solve:

If the sum of an arithmetic sequence is 220 and the first term is 10, find the common difference if the last term is 30.

Asked by markchanielr