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.

10 answers

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

1 = 6.16 and 7= 43.12

i think

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

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

WRONG

19 and 55

Good and correct

Reiny is correct

Ask a New Question or answer this question.

Similar Questions

The fifth term of an arithmetic sequence is 23 and the 12th term is 72. And they say first question 1.determine the first three
1. 3 answers
The sum of sixth term of a.p is 72 and the second term is seven times fifth term find the first term,common difference and the
1. 3 answers
The first term of the sequence is -168 and every term after the first term is 8 more than the term immediately proceeding it.
1. 1 answer
Find a formula for the nth term if...a)the 8th term is 8 and the 20th term is 44 b) the 8th term is 4 and the 18th term is -96
1. 2 answers