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stich3 [128]
3 years ago
15

Find the standard form of the equation of the parabola with a focus at (7, 0) and a directrix at x = -7.

Mathematics
2 answers:
Alecsey [184]3 years ago
7 0

<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>

Veronika [31]3 years ago
5 0

Answer:

x = - 1/28 y^2

Step-by-step explanation:

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spayn [35]

<u>Answer:</u>

The correct answer option is \frac { 4 } { 4 9 }.

<u>Step-by-step explanation:</u>

We are to find the probability that both your parents were born on weekend (either Saturday or Sunday).

Total number of days in a week = 7

Number of days in weekend = 2

Probability of being born on weekend = \frac { 2 } { 7 }

P (both parents were born on weekend) = \frac{2}{7} \times \frac{2}{7} = 4/49

3 0
3 years ago
I dont get so someone do it for 50pionts and brainilist​
Romashka-Z-Leto [24]

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2 years ago
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KIM [24]

Answer:

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Step-by-step explanation:

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2 years ago
3. What is the crucial factor for a sample selection to be random?
Nesterboy [21]
Members possibly involved must have an equal chance of being used, come from an equivalent background, be individually assigned through a random process, and all complete the study.
8 0
2 years ago
May I please get a step by Step for this ​
natulia [17]

Answer:

Step-by-step explanation:

h=16t^2+98=?

subtract 98 from both sides to get

h-98=16t^2

(the 98 on the right cancels)

now divide by 16 on both sides

h-98/16=t^2

(the 16 on the right cancels)

lastly take the square root on both sides

square root(h-98/16)= t

if you know what h is fill it in and it will give you your answer

Im not 100% sure!!

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