Answer:
36
Step-by-step explanation:
The total atomic number is 18, but i guess for this question you do 18+(-18)=36
The answer is 36 because it would change into 18--18 2 negative signs make the 18 a positive.
Round to the nearest significant number
275,000,000 = 2.75^8
2.75^8 is your answer
hope this helps
It is because the red disks were more than the other disks before the pupils added other disks.
