Answer:
Step-by-step explanation:
-9 is the first arithmetic means
Step-by-step explanation:
FORMULA:
Last term - first term
d = ————————————
No. Of terms - 1
9 - (-15)
d = ————
5 - 1. There are five number of terms because there will be 3 arithmetic means added to the two given numbers.
9 + 15. 24
d = ———— = ———— = 6
5-1. 4
To find next term add the difference to the first term.
6 + (-15) = 6-15 = -9 first arithmetic mean
6 + (-9) = 6-9. = -3
6 + (-3). = 6-3 = 3
6 + (3) = 6+3 = 9
