determine the common difference, the tenth term, and a formula for the nth term of each arithmetic sequence.
1. 6,10,14,18......
2. -5,-2,1,4......
2006-09-14 15:15:02 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
The answer are:
1) 4 is the common difference
The formula is 10n + 2, so the 5th term would be 22
2) -3 is the common difference
The formula is 3n-8, so the 5th term would be 7
You can figure out 10th term by putting in 10.
Hope that helps!
2006-09-14 15:32:52 · answer #1 · answered by Yada Yada Yada 7 · 1⤊ 0⤋
It's easy. 1. 4 2. 3
an easy way to find these is to subract the second number in the series by the first. (ei, 10-6=4, or -2--5=3)
2006-09-14 22:28:41 · answer #2 · answered by Anonymous · 0⤊ 0⤋
1, 4n+2 n=1,2,3... 10th term n=10 is 42
2. -5+3n n=0,1.2,3... 10th term when n=9 is 22
2006-09-14 22:32:40 · answer #3 · answered by rwbblb46 4 · 0⤊ 0⤋
1. 4
2. 3
2006-09-14 22:23:22 · answer #4 · answered by Anonymous · 0⤊ 0⤋
1) add 4 each time,, 10th =42, 4n-2
2)add 3 each time, 10th= 22, 3n-8
2006-09-14 22:23:53 · answer #5 · answered by rmr2990 2 · 0⤊ 0⤋