Question

determine whose 3rd term is 15 and 35th term is -81​

Answer 1

Step-by-step explanation:

a3=15 (a+2d=15).......1

a35=-81 (a+34d=-81)........2

now,from 1 and 2

a+2d=15

a+34d=-81

(- ) (- ) ( +)

-32d=96

d=96/-32

we get,d=3

now, put d=3 in 1

a+2×3=15

or,a+6=15

therefore,a=9 and d=3 mark brainliest

Answer 2

make me a brainliest plz..