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.

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

a+6d=19+36=55

Arithmetic and geometric progression. the following expression respresents a general arithmetic progression (AP):

A + (a + d ) + ( a + 2d) + :: + (1 - d) + 1

1 = 6.16 and 7= 43.12

19 and 55

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

Good and correct

Reiny is correct

i think

WRONG