Question

5. Arithmetic progression.(question.1.)The first term of an AP is -7 and the common difference 5, find its 18" term and general term.​

Answer 1

Answer:

18 term =a +17d = -7 + 17 X 5 =77

an = a+ (n-1)d

Step-by-step explannation:

Answer 2

Answer:

a.t.q

a= -7

d=5

so, a18= a+17d

= -7+ 17 multipled by 5

= -7 +85

= 78

general term = a+ (n-1) d

= -7 + (n-1) 5

= -7+ 5n-5

= 5n - 12

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Step-by-step explanation: