The answer is A. Protons.
Answer:
The percentage of scores higher than 72 is 99.85%
Explanation:
The empirical rule states that about 68% of observations falls within the first standard deviation (µ ± σ), 95% within the first two standard deviations (µ ± 2σ), and 99.7% within the first three standard deviations (µ ± 3σ)
We can use the relationship below
255-σ(61)=72
61σ=255-72
61σ=183
σ=3
The area is as shaded below
The percentage of scores higher than 72 is 99.7%+0.15%=99.85%
Talk to your teacher about the homework.
And maybe it seems like a lot because it's hard for you to do. You should try to learn the material better, then you'll be able to finish the work faster, and it won't seem like much.
Hope that helps.
Answer:
The answer you are looking for is the first one, in nonfiction if it cannot be proven it is an opinion pls give brainlest ;-;
Explanation: