Math, asked by haritharajan04, 1 year ago

Determine the 20th term of an AP whose 9th term is -6 and cd is 5/4

Answers

Answered by IshikaSunilSharma

3

Answer:

-31/4

Step-by-step explanation:

a+8d=9d

D=5/4

so

a+8×5/4 = -6

a+10 = -6

a= -16

a+19d

-16+19×5/4

-16+95/4

-31/4

Answered by maheshiitthedynamo

0

Step-by-step explanation:

9t term = -6

a+(n-1)d = -6

a+8(5/4)= -6

a= 4

20th term

= a+19(5/4)

=4+95/4=111/4

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