Answer:
20%
Step-by-step explanation:
The standard form of a circle:

Where:
(h; k) - the coordinates of a centerr - the radius
We have:

therefore

- the center

- the radius
Answer: 11
Point a would lie at the same point from the beginning.
EXPLANATION
say point a is x,y. Reflecting over the y axis makes it -x, y. Reflecting over the x axis makes it -x, -y. Finally rotating it 180 degrees would make it x,y, the same spot as in the beginning.
Answer:
-320 i guess
Step-by-step explanation:
51*-2*3-21+7=-320
Answer:
80 students.
Step-by-step explanation:
30% = 24 students
10% = 24/3 = 8
100% = 8*10 = 80 students.