Answer:

Step-by-step explanation:
A(4;1) B(1;3)
●use distance formula (see photo^)
I’m sorry bc I don’t know how to solve all of them but
#5 is C
#3, the equation is y=4
#4, the equation is x=-6
General Idea:
The measure of one of the central angles of a regular Polygon (
) can be used using the below formula:

Applying the concept:
The measure of one of the central angles of a regular octagon.
The octagon have 8 sides, using the above formula we get...

Conclusion:
The correct option is <em><u>A) 45 degrees</u></em>
Answer:
b
Step-by-step explanation:
when you subtract 10.3 by 16% you get 1.6