78, because you have to do the inverse operation so 80/2= 40 then 40-1= 39 and 39*3 = 78
Each line has a difference of four
The blue dot should be -10
Answer:
Which one do we have to answer?
Step-by-step explanation:
First of all, I can't even see the whole question. Second of all, you didn't tell us what to answer. Please comment on this answer on which question you need help with.
I would think it’s a square
2/7 is the probability that the first satellite sends a weak signal. That leaves 6, one of which sends a weak signal. So the probability that the second also sends a weak signal is 1/6. Combine these and we get 2/7×1/6=1/21.
