Question

What are the first five terms of
a1=7 d=-5

Answer 1

this is an arithmetic series
a1 = 7
the other terms will be 7 + (n-1)d
so second term is 7 +(2-1)* -5 = 7 -5 = 2
can you continue ?

Answer 2

n = 2nd 3rd 4th term etc

Answer 3

my options are
-5,2,9,16,23
7,2,-3,-8,-13
7,12,17,22,27
2,9,16,23,30

Answer 4

well as you can see i have done first 2 they are 7,2

Answer 5

these others are all going down by 5

Answer 6

gotcha! that was pretty dumb i totally missed that haha sorry!
Thanks!

Answer 7

yw

Answer 8

There's an easier approach to this tho

Answer 9

oh?

Answer 10

The common difference is -5 so you are again and again adding -5.
Just keep subtracting 5 again and again to get the next terms :)

Answer 11

7 - given
2nd term => 7 - 5 = 2
3rd => 2 - 5 = -3
etc.

Answer 12

yeah i must have punched that in my calculator wrong cause i wasn't getting that before haha i am getting it now