Question

please answer the questions immediately I will mark u as brainlist​

Answer 1

Answer:

Step-by-step explanation:

so let a= -s

         a+d=-s/2

so,

    as  a is -s then

    = (-s)+d=-s/2

    = d=(-s/2)+s

     = d= (-s)/2 + 2s/2

    = d= s/2

so,

  25th term will be

=a+24d

=(-s)+24(s/2)

=(-s)+12s

=11s

Answer 2

Answer:

55

Step-by-step explanation:

A = -5

D = a2 - a1

= -5/2 - (-5)

= -5/2 + 5

= 5/2

An = a + (n-1)d

= -5 + (25-1) (5/2)

= -5 + (24) (5/2)

= -5 + 60

= 55 Answer