Determine the value of D and A10 for each arithmetic sequence: 1. 3,5,7,9,...
2. -3,-6,-9,-12,...
3. 2, 1 ,1, ,...
Find the value of x, then write the first 5 terms of the arithmetic sequence, given a1 and d:
1. a=x, d=3x, a=25
2. a=x, d=x, a=10
3. a=x, d=, a= -11.5
Solve each problem:
1. Find the 23rd term of the sequence 5.7, 3.6, 1.5,...
2. If the 3rd term of an arithmetic sequence is 13 and the 9th term is 37, what is the common difference?
3. If the arithmetic sequence is 11 and the term is -77, what is the 20th term?
4. The last term of an arithmetic sequence is -104, the common difference is -13, and the number of terms is 13. What is the first term?
I know it might be long but I need the answers for 3 days but you can send it later if you want, tysm for helping me

An annual marathon covers a route that has a distance of approximately 26 miles. winning times for this marathon are all over 2 hours. the following data are the minutes over 2 hours for the winning male runners over two periods of 20 years each. earlier period 14 12 15 22 13 10 19 13 9 14 20 18 16 20 23 12 18 17 6 13 recent period 7 11 7 14 8 9 11 14 8 7 9 8 7 9 9 9 9 8 10 8 (a) make a stem-and-leaf display for the minutes over 2 hours of the winning times for the earlier period. use two lines per stem. (use the tens digit as the stem and the ones digit as the leaf. enter none in any unused answer blanks. for more details, view how to split a stem.) minutes beyond 2 hours earlier period 0 1 2 (b) make a stem-and-leaf display for the minutes over 2 hours of the winning times for the recent period. use two lines per stem. (use the tens digit as the stem and the ones digit as the leaf. enter none in any unused answer blanks.) minutes beyond 2 hours recent period (c) compare the two distributions. how many times under 15 minutes are in each distribution