Question

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

Answer 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