I am late doing my homework can someone?

2 ⤊

I am late doing my homework can someone?

Help Me with this problem its about arithmetic sequence it says " Find the term and give a formula for the sequence".

1. The 10th term is 31; 14th term is 43

2007-11-14 18:35:50 · 4 answers · asked by rambo 1 in Science & Mathematics ➔ Mathematics

Please help what is the first term.

2007-11-14 19:23:58 · update #1

4 answers

u10 = a + 9 d = 31
u14 = a + 13d = 43

4d = 12
d = 3

a + 27 = 31
a = 4

u (n) = 4 + 3 (n - 1)
u (n) = 1 + 3 n

2007-11-15 01:57:37 · answer #1 · answered by Como 7 · 2⤊ 1⤋

The formula will be 3x+1

where x is the "n"th term

2007-11-15 03:10:31 · answer #2 · answered by windzard 2 · 0⤊ 1⤋

The formula is 3x+1 where x is the nth term.

2007-11-15 02:49:26 · answer #3 · answered by defndrofangels 2 · 0⤊ 1⤋

Yap.. the formula is (3x + 1).

2007-11-15 02:56:12 · answer #4 · answered by Periwinkle 2 · 0⤊ 1⤋