Answer:
We have a1 = 27 and r = 3 (because 27:9 = 3; 9:3 = 3; 3:3 = 1);
Then s = 27 / (1 - 3) ;
Finally, s = - 27 / 2;
Step-by-step explanation:
Answer:
8.9 (just got it on Apex)
Step-by-step explanation:
(guessed correct on Apex due to other questions on Brainly that were relative to this one)