Question

The fifteenth term of an Ap: -23, -19, -15... Is

Answer 1

Answer:

23

Step-by-step explanation:

Here a=-23

d= 4

a15= -23+(15-1)(4)

= -23 + 56

= 23

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Answer 2

Answer:

the fifteenth term is :: 33

Step-by-step explanation:

the nth term of an ap is :: an= a+ (n-1)d

for the given problem

a= -23

d= -19-(-23) = -19+23= 4

therefore d= 4

which implies

a15= -23+(15-1)4

= -23+(14)4

= -23+56

= 33

a15= 33