The answer is ten if I'm correct
There are 20 squares total you shaded 5
1. given
2. addition property of equality
3. division property of equality
Answer:
(5, 4)
Step-by-step explanation:
The equation can be written in vertex form by adding and subtracting 25:
y = -(x^2 -10x +25) -21 +25
y = -(x -5)^2 +4
Then the vertex can be identified as (5, 4).