Question

find t12 for the A.P 12,9,6,......​

Answer 1

t12 for the A.P 12,9,6 is -21

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Answer 2

Answer:

-21

Step-by-step explanation:

From the question :-

a = 12

d = 9 - 12 = -3

t12 = ?

t = a + ( n - 1 ) d

t12 = 12 + ( 11 ) -3

t12 = 12 - 33

t12 = - 21