Please make me the brainiest if this helps;
17 and 18 are the answers
Answer:
The answer is constant
Step-by-step explanation:
Answer:
I'm pretty sure its C and D
Sum of the terms of the series is
Sn = n/2 ( a1+an )
we have n= 6 , a1= 17, an = 57
so Sn = 6/2 ( 17+57) = 3(74) = 222
-7-5+3=1
-12+3=1
-9≠1. As a result, this is False. Hope it help!
