in an arthemetic progression 7th term is 26 and 10th term is 35 find 19th term
Answers
Answered by
0
Answer:
62
Step-by-step explanation:
a7 = 26
26 = a + 6d ------------> 1
a10 = 35
35 = a + 9d --------------> 2
subtracting eq.1 from eq.2
a + 9d - 35 -(a + 6d - 26) = 0
3d = 9
d = 3
35 = a + 9d
a = 35 - 27 = 8
a = 8
a19 = a + 18d
= 8 + 18(3)
= 8 + 54
= 62
∴ 19th term is 62
Similar questions