Answer:
Mean = 19.5
Step-by-step explanation:
Mean = sum of numbers ÷ Amount of numbers
Mean = 
Mean = 
Mean = 19.5
Answer:
676 assuming the population is 3800 in 2019. If it's a different year then change t.
Step-by-step explanation:

7.83 x 10^-7 (the *^* is where the power goes)
Answer:
B) Inside the nucleus of an atom are protons and electrons.
Explanation:
Inside the nucleus of an atom are protons and neutrons. Electrons orbit (kind of?) away from the nucleus.
2 or 3 I think is the answer for number 5