Question

Which term of the AP -145,-141,-137......is the first positive term

Answer 1

Answer:

3

Step-by-step explanation:

this answer may help you

Answer 2

Answer:

37th term is the first positive term of the A.P: -145, -141, -137.....

Step-by-step explanation:

Here, given: a = -145

d = +4

n = ?

a(n) = a+(n-1)*d

If a(n) is the first positive term of this A.P then it should be lesser than zero. So,

a+(n-1)*d < 0

-145+(n-1)*4 < 0

-145+4n-4 < 0

-149+4n < 0

n = +149/4

n = 37.25 (i.e,)

n = 37.