Question

Find the 10th term of an arithmetic sequence if t1 = 2.1 and t4 = 1.83.

Answer 1

2.1 + 3n = 1.83; solve for n

Answer 2

gonna nail it down soon lol

Answer 3

lets start over....

Answer 4

2.1 +x +x +x = 1.83

3x = -.27

x = -.27/3 = -.09; check

t1 = 2.1
t2 = 2.1 -.09 = 2.01
t3 = 2.01 - .09 = 1.92
t4 = 1.92 - .09 = 1.83 checks out

Answer 5

t1 = t0 - .09 = 2.1

t0 = 2.1 + .09 = 2.19

tn = 2.19 - .09n; chk

t4 = 2.19 -.09(4) = 1.83 ..good

t10 = 2.19 - .09(10) = 1.29