The 5th and 10th term of an AP are 0 and 10 in respectively.find the 20th term.
3 answers
A20=a10 + 10d=
5th and 10th term of an AP are 0 and 10
a+4d = 0
a+9d = 10
subtract
5d = 10
d = 2
a + 4(2) = 0
a + 8 = 0
a = -8
term(20) = a + 19d = .....
a+4d = 0
a+9d = 10
subtract
5d = 10
d = 2
a + 4(2) = 0
a + 8 = 0
a = -8
term(20) = a + 19d = .....
the 10th term is 5 differences beyond the fifth
5 d = 10 - 0 ... d = 2
5 d = 10 - 0 ... d = 2
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