Refer to the diagram shown below.
At an arbitrary point P (x,y) on the parabola, the distance, d, from the focus to P should be equal to the distance from P to the directrix.
That is,
d² = (x - 3)² + (y - 4)² = (y - 1)²
(x - 3)² + y² - 8y + 16 = y² - 2y + 1
(x - 3)² + 15 = 6y
Divide each side by 6 to obtain
y = (1/6) (x - 3)² + 5/2
The vertex of the parabola is at (3, 5/2).
The line of symmetry is x = 3.
The leading coefficient, 1/6, is positive, therefore the curve opens upward.
Answer:
<span>Answer: option B. She did not set the width of the compass to the radius of the circle.
Explanation:
1) If she sets the compass to an arbitrary width to </span><span>draw the arc to cut the circle, the point obtained will not be to the right distance from the first vertex.
2) All the adjacent vertices on a regular polygon have the same distance one from each other.
3) In the hexagon that distance is the same radius, which you can see becasue you can form six equilateral triangles inside the circle, whose side lengths are the radius.
4) So, she should set the width of the compass to the radius of the circle.
</span>
Let x be the measure of the angle. The mathematical equation of the problem is
5(90-x) =

(180-x)

°
Answer:
o=80
Step-by-step explanation:
can you please explain it more clearly
Step-by-step explanation: