Find the standard form of the equation of the parabola with a focus at (7, 0) and a directrix at x = -7.
2 answers:
<u><em>Answer:</em></u>
y^2 = 28x
<em><u>Step-by-step explanation:</u></em>
Since the directrix is horizontal, use the equation of a parabola that opens left or right.
(y−k)^2 = 4p(x−h)
Find the vertex.
(0,0)
Find the distance from the focus to the vertex.
p = 7
Substitute in the known values for the variables into the equation
(y−k)^2 = 4p(x−h).
(y−0)^2 = 4(7)(x−0)
Simplify.
<em>y^2 = 28x</em>
Answer:
x = - 1/28 y^2
Step-by-step explanation:
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Answer:
11 and 13
Step-by-step explanation:
let smaller odd number be x
larger odd nuber be x+2
according to the question algebraic expression can be written as
6x+3(x+2)=105
6x+3x+6=105
9x=105-6
9x=99
x=99/9
x=11
larger number=x+2
11+2
13
1 oz is 5 dollars rounded.
The relation that is a function is answer D. All of the x-coordinates are all different
Answer:
The answer is 35.
46-11=35
<span>-5(x - 1) = 5 - 5x
Distribute -5 ion left side.
-5x + 5 = 5 - 5x
Subtract 5 from both sides.
-5x = -5x
Add 5x to both sides.
0 = 0
The equation 0 = 0 is true, so this equation has infinitely many solutions.
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