1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
dangina [55]
3 years ago
9

Find the polar equation of the conic with the focus at the pole, directrix x = 4, and eccentricity 1.

Mathematics
1 answer:
BabaBlast [244]3 years ago
6 0

Answer:

Choice D is correct

Step-by-step explanation:

The eccentricity of the conic section is 1, implying we are looking at a parabola. Parabolas are the only conic sections with an eccentricity of 1.

Next, the directrix of this parabola is located at x = 4. This implies that the parabola opens towards the left and thus the denominator of its polar equation contains a positive cosine function.

Finally, the value of k in the numerator is simply the product of the eccentricity and the absolute value of the directrix;

k = 1*4 = 4

This polar equation is given by alternative D

You might be interested in
Write an inequality to describe the region. The region between the yz-plane and the vertical plane x = 5
madreJ [45]

The inequality will be 0 < x < 5 .

Each line plotted on a coordinate graph divides the graph (or plane) into two half‐planes.  Before graphing a linear inequality, you must first find or use the equation of the line to make a boundary line.

The y z - plane is represented by the equation x = 0 .

As the region is between the y z - plane and the vertical plane x = 5 , we will get the inequality 0 < x < 5 .

Therefore , the inequality will be 0 < x < 5 .

To learn more on inequality follow link :

brainly.com/question/24372553

#SPJ4

3 0
2 years ago
If six girls can finish sweeping the floor of a hall in 45mins,how long will the same work take ten girls to do
AleksandrR [38]

Answer:

15 minutes i think

Step-by-step explanation:

45÷6=7.5

meaning 7.5 minutes per girl

so 4 girls would be 30 minutes of work

so 45-30=15

4 0
3 years ago
after 3 weeks a corn plant is 2 ft tall after 9 weeks the plant is 8 ft tall write an equation that represents the height Y in f
spayn [35]

Answer:

The equation would be y = x - 1

Step-by-step explanation:

In order to find the equation of the line, we first can express the two sets of data as an ordered pair. The two ordered pairs would be (3, 2) and (9, 8). Now that we have these, we can use the slope formula to find the slope.

m (slope) = (y2 - y1)/(x2 - x1)

m = (8 - 2)/(9 - 3)

m = 6/6

m = 1

Now that we have the slope, we can use either point and point slope form to get the equation.

y - y1 = m(x - x1)

y - 2 = 1(x - 3)

y - 2 = x - 3

y = x - 1

3 0
3 years ago
5.
neonofarm [45]

Answer:

3 kids and 5 adults

Step-by-step explanation:

3×5.5 = 16.5

5×7.25= 36.25

16.5+36.25= 52.75

4 0
3 years ago
A survey was conducted with a large group of teenagers from 6 different states and it asked them for their favourite sport out o
UkoKoshka [18]

Answer:

H0: There is no association between state and sporting preference.

H1: There is an association between state and sporting preference

Step-by-step explanation:

The hypothesis to be tested for is whether the factor 'state' is associated with the factor 'sporting preference'.

The study is therefore about 'association' and whether the distributions of sporting preferences are identical across states. In scenario in this case is the test for association which is the most appropriate test.

Two factors are deemed to not be associated unless there is supporting evidence to suggest otherwise. Since the null hypothesis is the default belief, the correct pair of hypotheses are:

H0: There is no association between state and sporting preference.

H1: There is an association between state and sporting preference

3 0
2 years ago
Other questions:
  • Name all segments parallel to XT
    14·2 answers
  • An online music club sells compact discs for $13.95 each plus $1.95 shipping and handling per order. If Maria's total bill was $
    13·2 answers
  • Choose the product.
    10·2 answers
  • How do you solve (2y^2)^3 x 2y^3
    8·2 answers
  • 3/5 times 2 i need help
    8·2 answers
  • HVAC technician average salary = $28/hour with a one-year Tech school certification costing an average of $7,500. What would you
    10·1 answer
  • Tom walked to school at a steady pace, met his sister, and they walked home at a steady pace. Select the description for this gr
    8·1 answer
  • PLEASE HELP I WILL GEIVE BRAINLIEST AND 20 POINTS Which are characteristics of scientific questions? Check all that apply.
    13·2 answers
  • A scuba diver is swimming 15 feet below the water’s surface.
    8·1 answer
  • What is 1/2x+1.5-2-7 simplified
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!