A. -1/4(x-10)^2
The screenshot shows the graph
Answer:
-7/2
Step-by-step explanation:
Depending on how big the center is, I would say 15.
I hope this helped!
Vertex = (3, 5)
focus = (3, 7)
directrix is y = 3
<h3>
Answer: 130</h3>
Explanation:
Let x be the unknown angle we want to find.
Let y be adjacent and supplementary to x. This means x+y = 180
Let z also be adjacent and supplementary to x. So x+z = 180 also
Subtracting the two equations leads to y-z = 0 and y = z. So effectively we've proven the vertical angle theorem.
Since the supplementary angles to x add to 100, we know that y+z = 100. Plug in y = z and solve for z
y+z = 100
z+z = 100
2z = 100
z = 100/2
z = 50
Therefore,
x+z = 180
x+50 = 180
x = 180-50
x = 130
