If the directrix is y = 4 and the focus is at
(3,0), the value of p is:

Answers

Answer 1

Using the equation of an parabola, it is found that the value of p is 0.5.

The equation of a parabola that is concave to the left or to the right, that is, that has directrix y = k, and vertex (h,k), is given by:

[tex](y - k)^2 = 4p(x - h)[/tex]

The focus is at: (h, k + p).

The directrix is at: y = k - p

For this problem, we have that:

Focus at (0,3), thus [tex]k + p = 3 \rightarrow k = 3 - p[/tex].Directrix at y = 4, thus [tex]k - p = 4[/tex]

Since [tex]k = 3 - p[/tex]:

[tex]3 - p - p = 4[/tex]

[tex]2p = 1[/tex]

[tex]p = \frac{1}{2}[/tex]

[tex]p = 0.5[/tex]

The value of p is 0.5.

A similar problem is given at https://brainly.com/question/17987697


Related Questions

The Budget Car Rental rates for renting a car for a day is shown in the table.

a) What is the initial cost of renting a car? (Answer in Blank 1)

b What is the rate of change? (Answer in Blank 2)

c) Using C for the cost of and d for the distance driven, write an equation representing the rental rates of the car agency. (Answer in Blank 3)

Answers

[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]

a.) Initial cost of renting the car is $100

b.) rate of change is slope, that is :

[tex] \dfrac{105 - 100}{100 - 0} [/tex]

[tex] \dfrac{5}{100} [/tex]

[tex] \dfrac{1}{20} [/tex]

[tex]0.05[/tex]

c.) Cost = C and distance = d

the equation will be :

[tex]C = \dfrac{d}{20} + 100[/tex]

A cheetah traveling at 31 m/s chased its prey for 11 seconds. What distance did the cheetah travel during the chase?

Answers

Answer:

341 meters

Step-by-step explanation:

you just multiply 31 by 11.

Answer:

341 meters

Step-by-step explanation:

Jusr do 31 times 11

what is -1/2 cubed? ?

Answers

Answer:

-1/8

Step-by-step explanation:

(-1/2)^3 = (-1/2) * (-1/2) * (-1/2) = -1/8

Answer:

-0.125

:) Hope this helped, let me know if you need more help! :)

Find the constant of proportionality in the graph
below.

a. 9
b. 4
C. 3
d. 1.5

Answers

The answer is B. Since the graph increases by 4 on the y-axis as x increases by 1, the constant of proportionality is 4.

help pleaseeeeeeee!!!!!!!!

Answers

Answer:

4,3

Step-by-step explanation:

Answer:

rectangle

Step-by-step explanation:

square corners and unequal sides

Evaluate this expression 33+(-5)-(-70)-26

Answers

Answer:

82

Step-by-step explanation:

33 + (-5) - (-70) - 26

33 - 5 + 70 - 26

- and - = +

- and + = -

+ and - = -

33 -5 = 28

28 + 70 = 108

108 - 26 = 82


Write an equation of the line that passes through point (6, 1) and has the slope m = -3.
y
4

Answers

Answer:

[tex]y = mx + c[/tex]

[tex]1 = - 3 \times 6 + c[/tex]

[tex]1 = - 18 + c[/tex]

[tex]1 + 18 = - 18 + 18 + c[/tex]

[tex]19 = c[/tex]

[tex]y = 6x + 19[/tex]

3/4 + 3/16 and 3/4 - 3/16

Answers

Answer:

for the first it is 15/16 and the second is 9/16

to help you use desmos sictific coulator

What does the greater unit rate, or slope, mean in terms of the situation? What can you conclude from this?

Answers

Answer: it means that he covered more space when tiling than Felicia did. Tell me if I am right please.

Answer correctly for brainliest

Answers

where is your question?

Answer:

what is your question?

Evaluate p+23 for p=8

Answers

Answer:

31

Step-by-step explanation:

p = 8

p + 23

= 8 + 23

= 31

31 is the answer.

The table below shows the equations of five lines.

line 1: y= 2x - 3
line 2: 2x + y - 3 = 0
line 3: y= 5x + 11
line 4: 2x - y = 10
line 5: y= 1/2x - 5

a) which line has the greatest slope? explain ur answer.
b) which lines are parallel? show workings and explain
c) which lines are perpendicular? show workings and explain.
d) at which point does line 3 cross the y-axis?

Answers

Answer:

a) line 3 because the coefficient of the term 5x, the slope is the greatest slope.

b) line 1 and 4 are parallel because they have the same slope: 2

c) line 1 with line 2 and line 4 with line 2 are perpendicular lines because their slopes are reciprocals negative.

d) line three crosses the y line at point 11

Step-by-step explanation:

Line 1. y = 2x - 3

Line 2: y = -2x + 3

Line 3: y = 5x + 11

Line 4: y = 2x - 10

Line 5: y = 1/2x - 5

how much can 18 go to 80

Answers

80÷18≈4
18 can go into 80 four times

Hope my answer helped u :)
80\18= 4.4
therefore: 18 can go into 80 4.4 times

Stanley's weekly allowance is $5. He can also earn $2 each time he walks the family dog. Write an equation that shows how the amount of money Stanley gets in a week, y, depends on the number of times he walks the dog, x.

Answers

Answer:

y = 2x + 5

Step-by-step explanation:

Since he earns $2 for every time he walks the dog, we multiply x by 2

He already starts with $5, so just add 5 to the equation to find y

Hi upandover can you help me.

Answers

Answer:

-a^5x^3

Step-by-step explanation:

hope this helps! :)

Let's separate this out and multiply the coefficients first, then the variables.

2 1/3 = 7/3

7/3 * -3/7 = -1

(a^2)(x)(a^3)(x^2)

When we multiply terms with exponents, we ADD the exponents.

(a^5)(x^3)

Answer: (-1)(a^5)(x^3)

Coefficient: -1

Hope this helps!

4 3/6×11 7/12=??. Can y'all please help I kinda need it , I'm failing math ​

Answers

Answer: Solution is in Photo

I need help figuring out the answers to these kinda poorly worded questions

Answers

Answers:What is that positive integer?  400What is the value of the positive root?  20What is the value of the negative root?  -20

=======================================================

Explanation:

Let x be the unknown positive integer.

The square roots of x are [tex]\sqrt{x}[/tex] and [tex]-\sqrt{x}[/tex], representing the positive and negative square roots respectively.

Taking the difference of those means we subtract:

[tex]\text{PositiveRoot}-\text{NegativeRoot} = \sqrt{x} - (-\sqrt{x}) = \sqrt{x}+\sqrt{x} = 2\sqrt{x}[/tex]

Set that equal to 40 and solve for x

[tex]2\sqrt{x} = 40\\\\\sqrt{x} = 40/2\\\\\sqrt{x} = 20\\\\x = 20^2\\\\x = 400[/tex]

Therefore, the integer we're after is 400.

The positive square root of such is [tex]\sqrt{x} = \sqrt{400} = \sqrt{20^2} = 20[/tex]

And the negative square root is [tex]-\sqrt{x} = -\sqrt{400} = -\sqrt{20^2} = -20[/tex]

The difference of which is:

(Positive Root) - (Negative Root) = 20-(-20) = 20+20 = 40

This helps confirm the answers.

PLSSS HELP WILL MARK FIRST RIGHT ANSWER BRAINLIEST!!!

Answers

Answer:

x= -11

Step-by-step explanation:

Rearrange terms

[tex]-1=\frac{5+x}{6} into -1=\frac{x+5}{6}[/tex]

Multiply all terms by the same value to eliminate fraction denominators

[tex]-1=\frac{x+5}{6} \\6(1)=6(\frac{x+5}{6} )[/tex]

Cancel multiplied terms that are in the denominator

[tex]6(-1)=6 (\frac{x+5}{6} )6(-1)=x+5[/tex]

Multiply the numbers

[tex]6(-1)=x+5\\-6=x+5[/tex]

Subtract 5 from both sides of the equation

[tex]-6=x+5\\-6-5=x+5-5[/tex]

Simplify

Subtract the numbers

Subtract the numbers

Move the variable to the left

Given: If CD = 1/2x − 3 units and GH = 5 − 3x units, what is the value of x?

Answers

X=16/7
Assume CD = GH
1/2x - 3 = 5 - 3x
Add 3x to both sides
7/2x-3=5
Add 3 to both sides
7/2x=8
Divide 7/2 on both sides
X=16/7

f(x)= ve + 9. Find f'(x) and its domain.

Answers

Answer:

Find the domain by finding where the expression is defined.

Interval Notation: [tex](-[/tex]∞[tex],[/tex] ∞[tex])[/tex]

Set-Builder Notation: {[tex]x|x[/tex] ∈  R}

The function declaration [tex]f(x)[/tex] varies according to [tex]x[/tex], but the input function [tex]ve + 9[/tex] only contains the variable [tex]v[/tex]. Assume

[tex]f(v)=ve+9[/tex]

[tex]f(v)=ve+9[/tex]

From the top of a 200 foot lighthouse, the angle of depression to a ship on the ocean is 23 degrees.
How far is the ship from the base of the lighthouse?

I know I did it right by the key says its wrong. Please provide steps

Answers

the ship is 472 m from the lighthouse

Step-by-step explanation:

from the question, we can know ∠OAS = 90°-23° =67° and AO = 200m

OS = A0 • tan 67°

= 200 m • 236°

= 472 m

Leen needed $82 to buy a scientific calculator for her math class. Her neighbour will pay her $4 per hour to babysit. Her father gave her $14. Write and solve an inequality that represents the minimum number of hours she will need to babysit to buy her calculator.

Answers

The inequality could be 82=14+4h with h standing in for hours worked

what decimal is equivulent to 1 5/8

Answers

Answer:

1.625

Step-by-step explanation:

that is the answer

Please someone help me with this

Answers

Answer:

ANSWER:C

Step-by-step explanation:

sana maka tulong

A company offers you a salary of $2,000 per month plus a signing bonus of $10,000. What is the yearly salary rate? PLEASE HELP!!!!

Answers

Since yearly, without the bonus, you would make a certain amount by multiplying $2,000 to a year, which is 12 months.

2000 × 12 = 24,000 a year.

That would be $24,000 a year.

Next, we can add 10,000 to the amount, since you are not getting paid that much for a year. It is just a "...plus...", a bonus.

24,000 + 10,000 = 34000

Therefore, the yearly salary rate will be $34,000 a year.

3h 10 min + 1h 20 min is equal is to​

Answers

3h 10 min + 1h 20 min is = 4 hours & 30 minutes

3х – 6 =-2y
Find the slope of a line perpendicular to each given line

Answers

Answer:

Slope of the perpendicular line: 2/3

Step-by-step explanation:

-2y = 3x - 6

y = - 3/2x - - 6/2

y = -3/2 + 3

The table shows Tampa’s average monthly temperature and precipitation for 6 months in 2018.What is the value of r? Round to the nearest hundredth.

Answers

Answer:

0.5

Step-by-step explanation:

Which of the equations below could be the equation of this parabola? A y = 1/6x2 B. x = -1/6y2 C. x = 1/6y2 D. y = -1/6x2

Answers

Answer:

C

Step-by-step explanation:

assuming the 2s are all squares

just plot a point and it's negative

Answer:bro w t f is C bro C isn’t always the same option on other quizzes

Step-by-step explanation:

if i have an 84 in a class, and I get a 67 on a test, what is ny grade?​

Answers

Answer:

B or C

Step-by-step explanation:

This depends on what % of your grade the test was.

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