Answer:
The equation of a parabola is 

Step-by-step explanation:
(h,k) is the vertex and (f,k) is the focus.
Thus, f = 1, k = −4.
The distance from the focus to the vertex is equal to the distance from the vertex to the directrix: f - h = h - 2.
Solving the system, we get h = 3/2, k = -4, f = 1.
The standard form is:

The general form is:

The vertex form is:

The axis of symmetry is the line perpendicular to the directrix that passes through the vertex and the focus: y = -4.
The focal length is the distance between the focus and the vertex: 1/2.
The focal parameter is the distance between the focus and the directrix: 1.
The latus rectum is parallel to the directrix and passes through the focus: x = 1.
The length of the latus rectum is four times the distance between the vertex and the focus: 2.
The eccentricity of a parabola is always 1.
The x-intercepts can be found by setting y = 0 in the equation and solving for x. 
x-intercept: 

The y-intercepts can be found by setting x = 0 in the equation and solving for y. 
y-intercepts: 


 
        
             
        
        
        
Answer:
the answer is D
Step-by-step explanation:
i got it right
 
        
                    
             
        
        
        
Answer:
16 cm
Step-by-step explanation:
A right triangle, with the hypotenuse = 18, one side = 7, and the other side = x.
Since this is a right triangle, use the pythagorean theorem to find the value for x. 
let a = 7 for one side, and let c = 18 for the hypotenuse. And, let c = x for the other side.
The pythagorean theorem is: c^2 = a^2 + b^2.
18^2 = 7^2 + x^2324 = 49 +x^2 
x^2 = 324 - 49 = 275So, x = sqrt(275) = 16.5 cm
 
        
                    
             
        
        
        
X=8 is the Answer.  So the equation would be <span>-8+4(1+5 times 8 )=156 </span>
        
             
        
        
        
Answer:
$160
Step-by-step explanation:
Part A-
Step 1: 6(2k+5) - 20 
Step 2: 6(2k) + 6(5) - 20
Step 3: 12k + 30 - 20
<h2><u>
12k + 10</u></h2><h2><u>
</u></h2><h3>Part B-</h3><h3>12(12.50) + 10</h3><h3>150 + 10</h3><h2><u>$160</u></h2>