Core mathematics
posted by Sequence and series .
The 4th term of an A.P.is 37 and the 6th term is 12 more than the 4th term.find the 1st and the 7th term of the sequence.

Core mathematics 
Reiny
4th term is 37 > a + 3d = 37
6th term is 12 more than 4th term > a+5d = a+3d + 12
2d = 12
d = 6
then in a+3d = 37
a + 18 = 37
a = 19
first term is 19
7th term = a+6d = 127
check:
19 25 31 37 43 49
is 4th term 37 ? yes
is 6th term 12 more than 4th? yes 
Core mathematics 
angel
1 = 6.16 and 7= 43.12

Core mathematics 
angel
i think

Core mathematics 
angel
Reiny can u answer my other question please it is the latest one about the charity swim

Core mathematics 
Anonymous
55

Core mathematics 
Neeka
a+6d=19+36=55
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