Question

Which term of the apn25,20,15 is the first negative term ?

Answer 1

Let the term be x

by using nth term formula we get

x=25+(n-1)×-5

we know that first negative term will be -5 in this AP

therefore,

-5=25-5n+5

-5=30-5n

5n=35

n=7

Answer 2

Answer:

idk im just here for the points btw im rlly bad at math XD