Determine the AP whose 3rd term is 5 and the 7th term is 9.
detail me tina pls
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Answers
Answered by
1
3rd term = 5
a+2d = 5.......(1)
7th term = 9
a+6d = 9........(2)
(2) - (1)
a+6d=9
-(a+2d=5)
4d=4
d=4/4
d=1
put the value of d in equation (1)
a+2d=5
a+2(1)=5
a+2=5
a=5-2
a=3
a.p. series are:- 3,4,5,6,7,8,9,......
khushi545356:
pls
Answered by
2
Answer:
Step-by-step explanation:
Given Series is in Airthmatic progression
• General term in A.P :-
Given relations :-
.....(1)
....(2)
On solving Equation (1) & (2)
a +2d= 5 a = 5 - 2d
Now put this in (2)
a +6d = 9
5 - 2d +6d = 9
4d = 4
Now put " d" value in any of the equation
a + 6(1) = 9
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