whats the formula to figure out this problem
3,5,-5...
The first term is 3. Each even-numbered term is 2 more than the previous term and each odd-numbered term, after the first, is -1 times the previous term. For example, the second term is 3+2, and the third term is -1 * 5. What is the 55th term of the sequence?
2007-11-30 09:04:29 · 3 answers · asked by Carl C 1 in Science & Mathematics ➔ Mathematics
3,5,-5,-3,3,5,-5,-3... hmm...
Seems to repeat every 4 terms. Because 55/4 has a remainder of 3, the 55th term would be the same as the 3rd, namely -5.
2007-11-30 09:08:21 · answer #1 · answered by Puzzling 7 · 0⤊ 0⤋
Um I have to leave for work right now but the 55th term is -5 I found this by figuring out when the pattern repeats and that is 3,5,-5,-3 and then i just divided 55 by 4 (four numbers in the sequence) and got 13.75 13 refers to 13 complete cycles through the sequence and .75 refers to it getting 3/4 (or .75%) threw the sequence which is -5.
2007-11-30 17:14:43 · answer #2 · answered by Hurricaneyo 2 · 0⤊ 0⤋
u hav 2 work out the nth term
x 55
2007-11-30 17:11:39 · answer #3 · answered by xxxx 3 · 0⤊ 0⤋