Question

The 6 term of ap is -10 and its 10th term is -26 . determine the 15 th term

Answer 1

Answer:

Step-by-step explanation:

a6=a+5d=-10  -----------equation 1

a10=a+9d=-26   ---------equation 2

use Elimination method to solve equations

we get ,     -4d=16

           d= -4

putting the value of d in equation 1 or 2

we get a=10

      we need to find a15

a15= 10+(15-1)-4

       =10-56

a15=46