find the 20th term of the AP 7,3,-1,-5...
answer me but step to step
dnt spame
Answers
Answered by
2
Step-by-step explanation:
a = 7
d=-4
a20= a+(n-1)d
=7+(20-1)(-4)
=-69
Answered by
1
Step-by-step explanation:
Given :-
a ( first term ) = 7
d ( commen difference ) = -4
n = 20
To find :-
20th term
Solution :-
by using tn formula :
tn = a + (n - 1) × d
putting the above values...
t 20 = 7 + ( 20 - 1 ) × (-4)
= 7 + 19 × -4
= 7 + (-76)
= 69
Therefore, 20th term of givan A.P is 69
Used formula :-
tn = a + (n - 1) × d
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