Question

The nth term of an Ap is given by an=4n-5 then find the sum of first 25 terms of an AP

Answer 1

Answer:

Step-by-step explanation:

an=4n-5

a1 = 4(1)-5

 a = -1

a25 = 4(25) -5

      = 100-5  = 95

S25 = 25/2 ( 95 + (-1) )

       = 25/2 (94)

       = 25 x 47

       = 1175

S25= 25/2(2a +

Answer 2

Answer:

ap is..1175

Step-by-step explanation:

hope its help uh