If you plug in the respective numbers (x,y) you'll get the answer choice C. 19=4(4)+3 : 19=19
Answer:
The answer to your question is: Yes a parabola can be drawn if we know the focus and the directrix.
Step-by-step explanation:
We can say that it is a vertical parabola that opens downwards.
We conclude that if we graph both the focus and the directrix. Also if we continue the process we can find the vertex (-4, -7) and p = 3.
Answer:
24 degrees
Step-by-step explanation:
when you have an angle that goes to the end of a circle you divide it by two, if the end of the triangle went to O it would be 48 degrees
Given:
Radius of small circle = 4 in.
Width of gray border = 2 in.
To find:
The area of the gray border.
Solution:
We have, radius of small circle:
The width of gray border is 2 in. So,t he radius of the larger circle is:
Now, area of gray border is the difference for area of larger circle and smaller circle.
Substituting 
in the above formula, we get
The area of the gray border is 
square inches. Therefore, the correct option is D.
