Answer: 
<u>Step-by-step explanation:</u>
The vertex form of a parabola is y = a(x - h)² + k or x = a(y - k)² + h
- p is the distance from the vertex to the focus
- -p is the distance from the vertex to the directrix

1) y = -2(x - 4)² - 1 → a = -2 (h, k) = (4, -1)

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2) x = (y - 1)² + 2 → a = 1 (h, k) = (2, 1)

Answer:
Angle 1 and angle 4 are congruent because all vertical angles are congruent. Angle 1 and angle 5 are congruent because corresponding angles are congruent. Idk the rest.
Step-by-step explanation:
Answer: Tom hit the bullseye 23 times .
Step-by-step explanation:
Let the number of times Tom hit the bullseye be 'x'
Since we have given that
Total number of times Tom shot = 55
Number of times he missed the shot be '55-x'
Number of bullets he already have = 10
According to question, For every time, he got bullseye, the father gave him an extra bullet and after every miss he took one away.
At last he ran out of bullets.
So, it becomes,

Hence, Tom hit the bullseye 23 times .
Answer:

Step-by-step explanation:
Given an hyperbola with the following conditions:
- Foci at (-10,0) and (10,0)
- x-intercept +/- 6;
The following holds:
- The center is midway between the foci, so the center must be at (h, k) = (0, 0).
- The foci are 10 units to either side of the center, so c = 10 and

- The center lies on the origin, so the two x-intercepts must then also be the hyperbola's vertices.
Since the intercepts are 6 units to either side of the center, then a = 6 and 

Therefore, substituting
and
into the standard form
