Find An For Each Of The Following Arithmetic Sequence, 1.A1=5 , D=4 , N=11, 2.A1=14 , D= -3 , N=25, 3.A1 =12 , D= 1/2 , N=16, 4.-10 , -6 , -2 , 2 ,6 N

Find an for each of the following arithmetic sequence

1.a1=5 , d=4 , n=11
2.a1=14 , d= -3 , n=25
3.a1 =12 , d= 1/2 , n=16
4.-10 , -6 , -2 , 2 ,6 n=27
5

 

Answer:"_" is su

1) a_n=45

2) a_n=-58

3) a_n=39/2

Step-by-step explanation:

a_n=a_1+(n-1)d

=5+(11-1)4

=5+(10)4

=5+40

=45

a_n=a_1+(n-1)d

=14+(25-1)-3

=14+(24)-3

=14-72

=-58

a_n=a_1+(n-1)d

=12+(16-1)1/2

=12+(15)1/2

=12+15/2

=39/2