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Alinara [238K]
3 years ago
8

What is the equation of the parabola with a directrix at y = -4 and focus (0, 4)?

Mathematics
1 answer:
Mashcka [7]3 years ago
5 0

Answer: this is Judy Heckman you answered a question about a parabola graph and someone went off of it before I could study it. Help thanks

Step-by-step explanation:

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NEED HELP ASAP GIVING BRAINLIST!!!!!
lbvjy [14]

Answer:

Top left: x^2 +8x +15

Top right: x^2 +3x -18

Bottom left: x^2 -3x -18

Bottom right: x^2 -10x +16

Step-by-step explanation:

6 0
3 years ago
ANSWER ASAP ILL MARK BRAINLIEST!!!!
Korolek [52]

Answer:

2 {x}^{2}  - 6x - 1 = 0 \\ a = 2 \:  \:  \:  b =  - 6 \:  \:  \: c =  - 1 \\  \\ x =  \frac{6\binom{ + }{ - } \ \sqrt{  {6}^{2} - 4(2)( - 1)}   }{2 \times 2}  \\  \\ x =  \frac{6 \binom{ + }{ - } \sqrt{44}  }{4}  \\  x =  \frac{6 +  \sqrt{44} }{4} \\  \\  or x =  \frac{6 -  \sqrt{44} }{4}

I hope that is useful for you :)

8 0
2 years ago
Graph the function f(x) = x3 – 4x – 1. Which are approximate solutions for x when f(x) = 0?
Scilla [17]
If f(x) is = to 0 then that means that you would have to plug the 0 in for all of the x that are in the function and the solve it.
f(x)= x3-4x-1
f(0)= (0)3-4(0)-1
0        0        0 -1
-1 
so that means that -1 would be the answer for the function
5 0
3 years ago
Read 2 more answers
Eddie is practicing wind sprints during his summer break. He’s able to run 72 meters in 12 seconds. If d represents distance and
AnnZ [28]
D is distance which is 72 meters
time represents seconds which is 12
so ratio is 12:72
reduce to get 1:6
time over distance would be 1/6
every second Eddie runs 6 meters
so t= d/6
or 6t=d
4 0
3 years ago
7. What is the equation of the line that passes through (-1, -4) and (0,5)?
Serga [27]

Answer:

A)y=9x+5

Step-by-step explanation:

If x=-1, y=-4,

  y=9*-1+5=(-9)+5=-4

If x=0, y=5,

  y=9*0+5=5

3 0
2 years ago
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