If , the sum of first terms of an A.P. is given by = 3 n − 4, then find its first term, second term and 2 sum to 10 terms can someone

Question

If , the sum of first terms of an A.P. is given by = 3 n − 4, then find its first term, second term and 2 sum to 10 terms
can someone answer it plz

in progress 0
Camila 1 month 2021-08-19T05:20:02+00:00 1 Answer 0 views 0

Answers ( )

    0
    2021-08-19T05:21:21+00:00

    Step-by-step explanation:

    3n-4

    Substituting n=1, we get

    3(1)+4

    = 7

    n=2, we get

    3(2)+4

    = 10

    S10 = n/2 [2a+(n-1)d]

    = 10/2 [2(7)+(10-1)(3)

    = 5[14+27]

    = 5× 41

    = 205

Leave an answer

Browse
Browse

18:9+8+9*3-7:3-1*13 = ? ( )