Question

8. How many terms of the AP 21, 18, 15, ... must be added to get the
sum 0.

TELL STEP BY STEP​

Answer 1

Answer

5

Step-by-step explanation:

you subtract 3 off of the 15 and you get 12 then repeat 12-3=9 then 9-3=6 then 6-3=3 then 3-3=0

list of terms 21,18,15,12,9,6,3,0

Answer 2

Answer:

5

Step-by-step explanation:

you subtract 3 off of and 15 and you get 12 and then repeat 12-3=9 then 9-3=6 then 6-3=3 then 3-3=0

list of terms 21,18,15,12,9,6,3,0