27. Find a polar equation of the conic with focus at the pole that has the given eccentricity and equation of directrix.
e=\frac{4}{3}, r \cos \theta=-3

Answers

Answer 1

The polar equation will be  [tex]r=\dfrac{4}{1+cos\theta}[/tex]

What is the polar equation?

A polar equation is any equation that expresses the relationship between r and theta, where r is the distance between the pole (origin) and a point on a curve, and theta is the counterclockwise angle formed by a point on a curve, the pole, and the positive x-axis.

From the equation, we are told that

The  Eccentricity: e = 1

The  Directrix is   y = 4

Generally, the polar equation for e =  1  and y  =  + c is mathematically represented as

[tex]r =\dfrac{e\times c}{1+ecos\theta}[/tex]

[tex]r =\dfrac{1\times 4}{1+1\times cos\theta}[/tex]  

 [tex]r=\dfrac{4}{1+cos\theta}[/tex]

 

Therefore the polar equation will be  [tex]r=\dfrac{4}{1+cos\theta}[/tex]

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Related Questions

Writing a Complex Number in Standard Form In Exercises 11-22, write the complex number in standard form.
11. 8+\sqrt{-25}

Answers

Answer:

Step-by-step explanation:

a boom de la caca

Please help me with this I would give you 50 points. Mrs. Hall's sixth-graders walk laps every day on the school track. the following are the numbers of laps the class competed in that lasted 12 weeks

15,18,20,20,10,22,14,7,18,19,15,23

create a box plot of the data.

Answers

Answer:

Refer to image below

Step-by-step explanation:

please help me with this square!

Answers

Answer:

EF

Step-by-step explanation:

its EF because its on the same corresponding side as LM

BRAINIEST PLS MY LADY

Answer:EF

Step-by-step explanation:

corresponds means having a close similarity; match or agree almost exactly. and by looking at the graph EF corresponds with LM meaning that EF is the answer.

Hope this helps, have a good day/night!

500 people are asked to name their favorite color. The results of this survey are shown in the pie chart below:
Each sector of the pie chart makes an angle at the center. For example, the yellow sector makes an 18-degree angle, since 18 degrees is 5% of 360 degrees.

If we consider only the people who named a rainbow color (red, orange, yellow, green, blue, or purple), what percentage of those people preferred red?

Answers

Answer:

40 degrees is (40/360)=0.111=11.1%

The color closest to 11.1% is Purple at 12%.

The total who prefer a rainbow color is:

13+4+5+15+16+12=65

Of this 65, 13 prefer red, so 13/65=0.20,

of the people who preferred a rainbow color,

20% preferred red.

Step-by-step explanation:

The percentage of those people who preferred red is 20%.

What is a percentage?

The percentage means the required value out of 100.

It is calculated by dividing the required value by the total value and multiplying it by 100.

The percentage change is also calculated using the same method.

In percentage change, we find the difference between the values given.

Example:

Required percentage value = a

total value = b

Percentage = a/b x 100

We have,

Considering only the people who named a rainbow color (red, orange, yellow, green, blue, or purple).

This means,

Total percentage.

= (13 + 4 + 5 + 15 + 16 + 12)

= 65%

Now,

The percentage of those people preferred red.

= 13%/65% x 100 %

= 13/65 x 100

= 20%

Thus,

The percentage of those people who preferred red is 20%.

Learn more about percentages here:

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On a DVD, information is stored on bumps that spiral around the disk. There are 73,000 ridges (with bumps) and 73,000 valleys (without bumps) across the diameter of the DVD. What is the diameter of the DVD in centimeters? Round your answer to the nearest whole number.

Answers

Answer:

I pretty sure it's 8cm.

Step-by-step explanation:

I multiplied 73,000 by 0.000074, which resulted in 5.402.
Then, I multiplied 73,000 by 0.000032, which resulted in 2.336.
I added the products together, which gave a sum of 7.738.
Then I rounded to the nearest whole number, which is 8, because the tenth in the decimal (.7) rounds up because it is >4.

help me please thank u

Answers

Answer:

[tex]225 {m}^{3} [/tex]

Step-by-step explanation:

To find the volume of the shape first we have to split the shape into two rectangles; a large one at the bottom and a small one at the top. The formula to find volume of a rectangle is

[tex]v = length \times width \times height[/tex]

note that after both volumes are found they should be added to determine the volume of the entire shape*

The length of the large rectangle is 5m, the width is 7m, and the height is 6m. Therefore the volume is

[tex]v = l \times w \times h \\ v = 5 \times 7 \times 6 \\ v = 210 {m}^{3} [/tex]

The length of the small rectangle is 5m, the width is 3m, and the height is 1m. Therefore the volume is

[tex]v = l \times w \times h \\ v = 5 \times 3 \times 1 \\ v = 15 {m}^{3} [/tex]

[tex]210 {m}^{3} + 15 {m}^{3} = 225 {m}^{3} \\ therefore \: the \: volume \: of \: the \: \\ entire \: shape \: is: \\ 225 {m}^{3} [/tex]

Answer:

[tex]V_{\ total}=225\ m^3[/tex]

Step-by-step explanation:

Step 1:  Find the volume of the big box

[tex]V_{\ big} = l * w * h[/tex]

[tex]V_{\ big} = 7\ m * 5\ m * 6\ m[/tex]

[tex]V_{\ big} = 210\ m^3[/tex]

Step 2:  Find the volume of the small box

[tex]V_{\ small} = l * w * h[/tex]

[tex]V_{\ small} = 3\ m * 5\ m * (7\ m - 6\ m)[/tex]

[tex]V_{\ small} = 3\ m * 5\ m * 1\ m[/tex]

[tex]V_{\ small} = 15\ m^3[/tex]

Step 3:  Combine the volumes

[tex]V_{\ total}=V_{\ big} + V_{\ small}[/tex]

[tex]V_{\ total}=210\ m^3 + 15\ m^3[/tex]

[tex]V_{\ total}=225\ m^3[/tex]

Answer: [tex]V_{\ total}=225\ m^3[/tex]

hurry ill give brainly

Answers

Answer:

D

Step-by-step explanation:

D is correct because the graph shows books' thickness starting at 1 1/2 inches thick and it fits.  C would not fit because it is a simple answer rather than showing an entire graph.  Sorry if this is wrong.  I'm almost positive this is right though.  Have a good day/night!  :D

The correct answer is D I remember doing this In school

Mr. Millar's garden is in the shape of a trapezoid shown below. What is the area of the garden?

Answers

Answer:

12.5 unit square

Step-by-step explanation:

The area of a trapezoid is calculated with the following formula:

(b1 + b2)*h/2 (b1: base, b2: base, h: height)

(4+6)*(2.5)*2 = 12.5

In the figure below, the m∠2 is 50°.

∠1 and ∠3 are a pair of ? angles.

Answers

Answer:

adjacent

Step-by-step explanation:

Adjacent I think because that’s what my papa said to me when he went to go get milk

A recipe for fruit punch calls for 3 liters of orange juice and 2 liters of pineapple juice. Jo creates a drink by mixing 4 liters of orange juice with 3 liters of pineapple juice.

Which recipe will have the stronger pineapple taste?

Answers

jo’s because there’s less orange juice
3/2 and 4/3= 9/6 and 8/6
The orange juice will be the strongest

hurry ill give brainly

Answers

its 15 because you have it 3 times. the mode is the number that you see the most.

Answer:

the answer is 15

Step-by-step explanation:

hope i helped :)

Rewrite 6 3/5 as an improper fraction.

Answers

Answer:

33/5

Step-by-step explanation:

the answer is 33/5

multiply 5 and 6 then subtract by 3.

hurry illgive brainlt
Which ratios are equivalent to the given ratio?

3 to 2

Select each correct answer.


1510

23

4:12

6 to 4

18:12

Answers

The answers would be A, D, E
Solution:
18:12

6:4

(And if the first one is 15:10 then yes, but if it’s just a whole number which is 1510 then no)

Pls help me givving brainliest also NOOOO LINKSSSSSSSS

Answers

Answer is 30.

5•12= 60 ÷ ½ or 0.5 = 30.
1/2*l*w
1/2*12*5
Answer- 30

What is the interquartile range of this data set?

{18, 17, 10, 25, 20, 20, 30, 18, 18, 30, 25}



Enter the answer in the box.

Answers

Answer:

7

Step-by-step explanation:

Answer:
The interquartile range of the data set is 7.

Step-by-step explanation:

The given set of data is
(18, 17, 10, 25, 20, 20, 30, 18, 18, 30, 25)
Arrange the data in ascending order.
10, 17, 18, 18, 18, 20, 20, 25, 25, 30, 30
Divide the data in two equal parts.
(10, 17, 18, 18, 18), 20, (20, 25, 25, 30, 30)
Divide each parenthesis in 2 equal parts.
(10, 17), 18, (18, 18), 20, (20, 25), 25, (30, 30)
Now we can say that,
Q1 = 18, Median = 20, Q3 = 25
Interquartile rage of a data is
I.Q.R. Q3 Q₁
I.Q.R.25-18=7

Therefore the interquartile range of the data set is 7.

The table below shows the price, y, of ground beef based on weight, x. Given that y is proportional to x, what would be the price of 3 pounds of meat?

Answers

B,cause after 2.25 it’s 3 pounds and if you - 4.95 with 3.85 you will get 1.10 and then you plus it with 4.95 equals 6.05 but obviously it’s not gonna be on there so you gotta do a lil rounding up ! I think,I just got the answer from my teacher
The answer should be (b)

13.33:
For a set of ten numbers, removing the largest number decreases the average by 1. Removing the smallest number increases the average by 2 . What is the positive difference between the largest and the smallest of these ten numbers?
Hint: Sometimes thinking of the average of a list of numbers as "balancing" the list helps solve problems.
Hint: How far must the largest number be from the average of the origiNl list?

Answers

Answer: The mean will have a higher value than the median. A data set distribution that is skewed right is asymmetrical and has a large number.

Step-by-step explanation:

4. Find the vertex, focus, and directrix of the parabola. Sketch its graph, showing the focus and the directrix.
x^{2}=-3 y

Answers

Answer:

vertex - (0,0)

focus - (0, 3/4)

directrix - 3/4

parabola- x^2=-3y

graph of equation:

which irrational number is the GREATEST?

Answers

Answer:

None

Step-by-step explanation:

Irrational numbers are numbers that go on and on. Since none of them ever end, there cant be a greatest irrational number.

the answer is D. i put them into the calculator and turned them into decimals

Can someone answer this

Answers

Answer:

C

Step-by-step explanation:

Snow because the temperature is below freezing and the previous days forcast had clouds that indicated at least rain which would turn to snow

Answer:

Snow

Step-by-step explanation:

If the temp is below 30 degrees which is freezing, and it is going to percipitate ( i.e. rain, snow, sleet, hail,) it will be either snow sleet or hail because the rain will freeze due to the cold temperatures.

PLEASE HELP!!

What is the surface area of the triangular prism shown?

Answers

Answer:

volume v: 3494.8 cm²

Step-by-step explanation:

I think I am not sure

Answer: 1008

Step-by-step explanation:

Brainly patrol please don’t delete

given the function f(x) = x2 - 4 + 3, what is the output of f(-3)?

x2(second power)
A). 24
B). 21
C). 0
D) -3

Answers

Answer: 0

Step-by-step explanation:


Brainly patrol pls don’t delete

f(-3) means substitute x = -3 to the function:
f(x) = x^2 - 4x + 3
f(-3) = (-3)^2 - 4(-3) + 3
f(-3) = 9 + 12 + 3
f(-3) = ?
So wouldn’t it be A 24?

Brainliest! Please help me

Answers

Hey there!

1/2 x 4/4 = 4/8

So , ? = 4

Answer:

the answer should be 4/8 hopefully because first of all you need to use a method that can help you save your life which is cross multiplying.

_1_= __?_

  2       8

you multiplied first 1 times 8 and then divide by 2 in which you will get an answer of 4/8 and to check it you divide 1/2 which gives you 0.5 and then divide 4/8 to see if it is an equivalent fraction and it will give you 0.5 in which yes sir its an equivalent fraction so 4/8 is the correct answer and have a great day.

Step-by-step explanation:

hurry ill give brainly

Answers

Answer:

A = 54 units²

Step-by-step explanation:

Area of triangle

[tex]A = \frac{1}{2} \times \text{base} \times \text{perpendicular height}[/tex]

You can read the lengths of the base and the height from the graph. Base is 12 units and height is 9 units. (Count the squares. Or 12 = 13 - 1 and 9 = 14 - 5)

[tex]A = \frac{1}{2} \times 12 \times 9\\A = 54 \text{ units}^2[/tex]

your answer is a=54 units^2

A rectangular prism is 15 centimeters long, 33 centimeters wide, and 29 centimeters high. What is the surface area of the rectangular prism?
Help!

Answers

Answer:

hey!!!

3774 is the answer

please read the explanation... it always helps!!!

Step-by-step explanation:

okay i want you to imagine a tissue box... there are six sides... 4 that are equal in measure and the other two that are equal in measure... (i hope that was helpful and not confusing!! lol)

2 (15*33 + 15*29 + 33*29) = 3774

3774 cm squared

Answer:

total surface area = 3774 cm2

lateral surface area = 2784 cm2

top surface area = 495 cm2

bottom surface area = 495 cm2

Step-by-step explanation:

I just multiplied the dimensions given in question...

hope this helps! :D

Please help me everything you need to know is in the picture

Answers

Answer:15,005 or 23.2

Step-by-step explanation:

PLEASE ANSWER ASAP ^^

Answers

The answer should be B, sorry if im wrong
C. The prisms have the same volume

Steps:
1. First you have to find the volume of the rectangular prism (l • w • h). 14 • 5 • 2= 140
2. Then you have to find the volume of the triangular prism (1/2a • c • h). 4 • 5 • 14= 280. 280 / 2= 140.

Both the volume of the rectangular prism and the triangular prism is 140

2. The lengths of three rods are $6 cm, 10 cm, and 11 cm. How can you use these rods to measure a length of 15 cm ?

Answers

26cm           10cm       11cm    

Step-by-step explanation:

Helppppp

I summon fieryanswererft :D

:DDDDD

Answers

Answer:

5446 cm²

Explanation:

Area of triangular prism = Base × Height + Length × (perimeter of base)

Here given:

Base: 24Height: 35Length: 47 cmPerimeter of Base: (37 + 24 + 37) = 98 cm

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

Solve for Surface Area = 24 × 35 + 47 × (98) = 5446 cm²

The answer is 5446 square centimeters


Jayden wants to lay sod on his front yard and on half of his back yard. His front yard has a length of 50 feet and a width of 70 feet. His back yard has a length of 10 feet and a width of 30 feet. How many square feet of sod does Jayden need to purchase?

Answers

The first thing we must do for this case is to calculate the area of both yards.

We have then:

front yard:

A1 = (50) * (80)

A1 = 4000 feet ^ 2

Back yard:

A2 = (10) * (30)

A2 = 300 feet ^ 2

"Jayden wants to lay sod on his front yard and on half of his back yard"

Then, the total amount will be:

A = A1 + (1/2) A2

Substituting:

A = 4000 + (1/2) (300)

A = 4000 + 150

A = 4150 feet ^ 2

Answer:

jayden needs to purchase 4150 square feet of sodd

Answer:

Its an area equation. Area is length times width.

So to start, he needs 50 x 80 square feet in his front yard, BUT THAT IS ONLY HALF OF THE PROBLEM. For the front yard he needs 4000 sq. feet. For the back, it is different. He needs 10x40÷2. To first simplify, we do the multiplication. This comes to 400÷2. then it is simply 200.

Now for the easy part. Take the 4000 and add 200. Answer? 4,200.

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