Which term of sequence 48,43,38 .....will be first negative term
Answers
Answered by
6
Answer:-
Step by step explanation :-
Given AP:-
48, 43, 38......
First term, a = 48
Common Difference, d = ( a2 - a1 ) = 43 - 48 = - 5
We know that the nth term of the AP
an = a + ( n - 1 ) * d = 0
=> 48 + ( n - 1 ) * ( - 5 ) = 0
=> 48 - 5n + 5 = 0
=> 53 - 5n = 0
=> - 5n = - 53
=> n = 53 / 5
=> n = 10.6
Ist negative term is 11th term.
Hope it helps!
Step by step explanation :-
Given AP:-
48, 43, 38......
First term, a = 48
Common Difference, d = ( a2 - a1 ) = 43 - 48 = - 5
We know that the nth term of the AP
an = a + ( n - 1 ) * d = 0
=> 48 + ( n - 1 ) * ( - 5 ) = 0
=> 48 - 5n + 5 = 0
=> 53 - 5n = 0
=> - 5n = - 53
=> n = 53 / 5
=> n = 10.6
Ist negative term is 11th term.
Hope it helps!
Answered by
4
Answer:
Given
48 , 43 , 38 , ......... , are in A.P
First term a = 48
Common difference
d = a2 - a1 = 43 - 48 = -5
d = -5
nth term of A.P
an = n + ( n - 1 ) d = 0
an = 48 + ( n - 1 ) -5 = 0
an = 48 - 5n + 5 = 0
an = 53 - 5n = 0
- 5n = 0 - 53
- 5n = - 53
n = - 53 / - 5
[ minus gets cancelled ]
n = 10.6
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