Find the value of t7andt9 for the ap 7,13,19,25....
Answers
Answered by
9
in this ap , 7,13,19,25....
common difference is 6
=> 7th term will be
a +6d
= 7 + (6×6)
= 7+42
= 49
=> 9th term will be
a + 8d
= 7 + (8×6)
= 7+ 48
= 55
common difference is 6
=> 7th term will be
a +6d
= 7 + (6×6)
= 7+42
= 49
=> 9th term will be
a + 8d
= 7 + (8×6)
= 7+ 48
= 55
Answered by
6
Answer:
t7+t9 -- 98.
Step-by-step explanation:
Here. a - 7 , d-- 13-7-- 6.
tn -- a+n-1 d
t7 - 7+7-1*6
t7- 7+36
t7 = 43. _______(1)
t9 =7+9-1*6
=7+48
t9 = 55. _________(2).
Now,
from ( 1 ) and ( 2 )
t7 + t9
=43 + 55
=98
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