Activity:- Here a
tn= -940
According to formula, tn= a+(n-1)d
-940 the sequence is 50,40,30,20….​

1 thought on “Activity:- Here a<br />tn= -940<br />According to formula, tn= a+(n-1)d<br />-940 the sequence is 50,40,30,20….​”

1. Answer:

   a =50 , d= 40 -50= -10, tn= -940

   we know that

   tn =a+(n-1)d

   -940 = 50+(n-1)-10

   -940 -50 = (n-1) -10

   -990 = (n-1) -10

   -990 = -10n +10

   -990 -10 = -10n

   -1000 = -10n

   -1000/-10=n

   100=n

   t100 = – 940

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