Answer:
Economic growth
Migration boosts the working-age population. Migrants arrive with skills and contribute to human capital development of receiving countries. Migrants also contribute to technological progress. Understanding these impacts is important if our societies are to usefully debate the role of migration.
Answer: B. there is a conference for school principals coming to town. I hope this helps everyone :)
I took a test so i know this answer is correct! :)
Answer:
Queries can perform many different functions in a database. Their most common function is to retrieve specific data from the tables. The data you want to see is usually spread across several tables, and queries allow you to view it in a single data sheet.
Answer:

Explanation:
We want to know the value of
when 

From here, we can find the factors of the quadratic equation, we need two numbers that multiplied give -400 and added -30. Since they are factors of 400, we can choose -20x20 or -40x10. When adding -20 and 20 the result is zero, but the sum of -40 and 10 is -30. Then:

The solutions of the quadratic equation are
and
:

Since
is a positive integer:

True!
Why?
Well, non-verbal communication is talking, but without words. It includes of body language, think of sign language, you use your hands. :)
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