Question

Find the 11th term of the arithmetic sequence. a3 = 20.5 and a8 = 13, a11 = ______.

Answer 1

a_3 = 20.5 and a_ 8 = 13, a_11 = ______. @Numb3r1

Answer 2

General formula for questions like this:\[a_n=((a_x-a_y) \div (x-y))+a_x-(x \times(a_x-a_y) \div (x-y))\]

Answer 3

Can u help me work it out @Numb3r1

Answer 4

@jim_thompson5910

Answer 5

@satellite73

Answer 6

\[a _{n}= 23.5-(n-1)(1.5)\]