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
Alex_Xolod [135]
3 years ago
14

Dada la ecuacion 25x2 + 4y2 = 100, determina las coordenadas de los vertices, focos, las longitudes de los respectivos ejes mayo

r y menor, la excentricidad, la longitud de los lados rectos y realiza la representacion grafica
URGENTE

Mathematics
1 answer:
Likurg_2 [28]3 years ago
7 0

Answer:

The given equation is

25x^{2} +4y^{2}=100

Which represents an elipse.

To find its elements, we need to divide the equation by 100

\frac{25x^{2} +4y^{2} }{100} =\frac{100}{100} \\\frac{x^{2} }{4} +\frac{y^{2} }{25} =1

Where a^{2} =25 and b^{2}=4. Remember that the greatest denominator is a, and the least is b. So, we extract the square root on each equation.

a=5 and b=2.

In a elipse, we have a major axis and a minor axis. In this case, the major axis is vertical and the minor axis is horizontal, that means this is a vertical elipse.

The length of the major axis is 2a=2(5)=10.

The length of the minor axis is 2b=2(2)=4.

The vertices are (0,5);(0,-5) and (2,0);(-2,0).

Now, the main parameters of an elipse are related by

a^{2}=b^{2} +c^{2}, which we are gonna use to find c, the parameter of the focus.

c=\sqrt{a^{2}-b^{2} }=\sqrt{25-4}=\sqrt{21}

So, the coordinates of each focus are (0,\sqrt{21}) and (0,-\sqrt{21})

The eccentricity of a elipse is defined

e=\frac{c}{a}=\frac{\sqrt{21} }{5}  \approx 0.92

The latus rectum is defined

L=\frac{2b^{2} }{a}=\frac{2(4)}{5} =\frac{8}{5} \approx 1.6

Finally, the graph of the elipse is attached.

You might be interested in
Jayden evaluated the expression a ÷ (2 + 1.5) for a = 14. He said that the value of the expression was 8.5. Select all the state
Darina [25.2K]

Answer:

C) Jayden divided 14 by 2 and then added 1.5.

Step-by-step explanation:

Jayden did

(14/2)+1.5 which is 8.5

so C is correct.

Hope this helps plz hit the crown :D

6 0
3 years ago
Find the length of side y
Serggg [28]

Answer:

\large\boxed{y=76.3359\ cm\approx76.3\ cm}

Step-by-step explanation:

Use cosine:

cosine=\dfrac{adjacent}{hypotenuse}

We have

adjacent=73\ cm\\hypotenuse=y

and the angle 17°.

\cos17^o\approx0.9563

Substitute:

\dfrac{73}{y}=0.9563             <em>convert the decimal to the fraction</em>

\dfrac{73}{y}=\dfrac{9563}{10000}          <em>cross multiply</em>

9563y=730000           <em>divide both sides by 9563</em>

y=\dfrac{730000}{9563}

y\approx76.3359

8 0
3 years ago
Solve for x. assume that lines which appear to be tangent are tangent
Setler [38]

Answer: 9

Step-by-step explanation:

2X+5=3X-4

-2X. -2X

5= X-4

+4

9=X

7 0
3 years ago
The surf instructor has an initial fee of $12 and charges $8 per hour for lessons, which is represented by the equation y = 8x +
strojnjashka [21]
Y=8x+12

y=8(32)+12
y=256+12
y=268

y=8(24)+12
y=192+12
y=204

204+268=$472

The instructor makes $472 a month.
7 0
3 years ago
Read 2 more answers
Still have to times it by 20%
Brut [27]
Times what by 20% ? If you can ask me the full question i would love to help!
6 0
3 years ago
Read 2 more answers
Other questions:
  • Clouds are made up of water droplets. Which statement BEST describes how the water droplets get into the air to form clouds? *
    6·1 answer
  • Question 1
    15·2 answers
  • Find a quadratic equation that passes through the following points.
    5·1 answer
  • Triangle ABC has vertices A(5, 3) , B(3, 7) , and C(1, 4) . Triangle ABC is dilated, and the vertices of the image are A′(1.25, 
    7·1 answer
  • Which inverse operation would be used to verify the following equation? 102 ÷ 3 = 34
    12·2 answers
  • The length of a rectangle is 3 centimeters less than twice the width. If the perimeter of the rectangle is 24 centimeters, find
    12·1 answer
  • A man invests a total of $9,493in two savings accounts. One account yields 9% simple interest and the other 10% simple interest.
    9·1 answer
  • If two sides of a triangle measurement 8cm 12cm what is the range of the third side
    8·1 answer
  • HELPPPPPPPPPPPPPPPPPPPPPPPPPPP
    10·1 answer
  • 7. Use the quadratic formula to find the solution(s). x² + 2x - 8 = 0​
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!