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
amm1812
2 years ago
8

Which is the equation of an ellipse with directrices at y = ±2 and foci at (0, 1) and (0, −1)?

Mathematics
1 answer:
Sedbober [7]2 years ago
6 0

Answer:

b) <em>Equation of the ellipse    </em>\frac{x^{2} }{1} + \frac{y^{2} }{2} = 1<em></em>

Step-by-step explanation:

<u><em>Explanation</em></u>:-

<u><em>step(i)</em></u>:-

<em>Given the direct rices of the ellipse   y = ±2</em>

<em>Given foci of the ellipse F( 0 ,± c) = ( 0,±1)</em>

<em>The  the direct rices of the ellipse </em>

                                              y = ±    \frac{a}{e}

                                               \frac{a}{e} = 2

                                               a = 2 e ...(i)

Given focus ( 0 , c) = ( 0, a e) = ( 0,1)

                                            a e = 1 ...(ii)

From (i) and (ii)

                                   2 e (e) = 1

                                   2 e² = 1

                                     e^{2} = \frac{1}{2}

                                     e = \frac{1}{\sqrt{2} }

<u><em>Step(ii):</em></u>-

                         Now a = 2 e = 2 (\frac{1}{\sqrt{2} })

                                a  = √2

<em>Now we know that The relation between the focus and minor and major axes</em>

<em> formula  C² = a² - b²</em>

<em>                                             b² = a ² - C²</em>

<em>                                              b²  = 2 - 1 = 1</em>

<u><em>Step(iii)</em></u><em>:-</em>

<em>Equation of the ellipse</em>

<em>                                </em>\frac{x^{2} }{b^{2} } + \frac{y^{2} }{a^{2} } = 1<em></em>

<em>                            </em>\frac{x^{2} }{1^{2} } + \frac{y^{2} }{(\sqrt{2}) ^{2} } = 1<em></em>

<em>                            </em>\frac{x^{2} }{1} + \frac{y^{2} }{2} = 1<em></em>

<u><em>Conclusion:</em></u><em>-</em>

<em>Equation of the ellipse    </em>\frac{x^{2} }{1} + \frac{y^{2} }{2} = 1<em></em>

<em></em>

<em>            </em>                          

You might be interested in
Consider the line 7x+6y=5.
ladessa [460]

Answer:

Slope of parallel line: -7/6

Slope of perpendicular line: 6/7

Step-by-step explanation:

7x + 6y = 5

6y = -7x + 5

y= -7/6x + 5/6

5 0
2 years ago
Please*** I need help with this basic algebra problem.<br> FILL IN THE MISSING STEPS.
Oduvanchick [21]

Answer:

6(2x-3)= -9               given

12x-18= -9                distribute

12x-18+18= -9+18      addition

12x= 9                       division

x= 3/4                        solution

Step-by-step explanation:

5 0
2 years ago
Bill makes leather shoes. He charges $45 for a pair of women's shoes and $50 for a pair of men's shoes. He sells x pairs of wome
Kruka [31]

Answer:

Bill needs to sell 50 pairs of men’s clothes.

Step-by-step explanation:

50y = 2500

Divide by 50 on both sides

2500/50 = 50

7 0
3 years ago
Formula lui paralelipiped.
Scorpion4ik [409]
V=abc
a=2(ab+act+bc)

hope it helps
8 0
3 years ago
What is the product of 2/5 and 2/3​
stich3 [128]

Answer:

4/15 or in decimal form its 0.26

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Other questions:
  • Darcy bought 1\2 pound of cheese and 3/4 pound of hamburger for barbecue use the number to compare the amounts of cheese and ham
    5·2 answers
  • Find an equation for the line tangent to the curve y=x^3-4x+8 at the point (4,56)
    10·1 answer
  • Mr Dominguez spends three weeks training for a marathon. Every day he runs 1/2 mile more than the day before. If the first day h
    13·1 answer
  • Alan has read 80​% of a book. He has 4 more pages to finish. How many pages are there in the​ book?
    15·2 answers
  • A rectangular water tank carries 40000 litres of water what is the best area if its height is 2 m​
    10·1 answer
  • A person pay $3500 for 42 lawn mowers, then sells each lawnmower for $99. How much profit does the store make?
    6·1 answer
  • The points (2, 8) and (1, 2) fall on a particular line. What is its equation in slope-intercept form?
    10·1 answer
  • Jada earns twice as much money per hour as Diego. Diego earns twice as much money per hour as Lin.
    9·1 answer
  • Consider f and c below. f(x, y) = x2 i + y2 j c is the arc of the parabola y = 2x^2 from (−1, 2) to (0, 0)
    6·1 answer
  • The entrance to the louvre museum in paris is a pyramid made of glass and steel. the height of the pyramid is 22 meters and the
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!