Question

if the nth term of an ap, an=9-5n
then a7=?​

Answer 1

Answer:

an = 9-5(1)

a = 4

a2 = 9 - 5(2)

a2 = 9-10 =-1

d = -1-4 = -5

A7 = 4+(7-1)-5

A7 = 4-30

A7 = -26

Answer 2

Answer:

-26

Step-by-step explanation:

an=9-5n

a1=9-5(1)

a1=9-5

a1=4

a2=9-5(2)

a2=9-10

a2=-1

d=-1-4

d=-5

a7=a1+(n-1)d

a7=4+(7-1)(-5)

a7=4+6(-5)

a7=4-30

a7=-26