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katovenus [111]
3 years ago
11

Write an equation of the ellipse centered at the origin given its vertex and co vertex

Mathematics
1 answer:
jolli1 [7]3 years ago
4 0

Answer:

\dfrac{x^2}{49}+\dfrac{y^2}{25}=1.

Step-by-step explanation:

The equation of the ellipse is

\dfrac{x^2}{a^2}+\dfrac{y^2}{b^2}=1.

If the vertex of the ellipse is at point (-7,0), then a=7.

If the co-vertex of the elllipse is at point (0,-5), then b=5.

The equation of the ellipse is

\dfrac{x^2}{7^2}+\dfrac{y^2}{5^2}=1,

\dfrac{x^2}{49}+\dfrac{y^2}{25}=1.

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ser-zykov [4K]
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4.2z=2.7
z=9/14
That's your answer and that's how you work out.
3 0
3 years ago
The black graph is the graph of y=f(x). Choose the equation for the red graph.<br> Please help me!!!
dusya [7]

Answer:

B

Step-by-step explanation:

The red graph is a horizontal translation of 5 units left followed by a reflection in the x- axis.

Given f(x) then f(x + a) is a horizontal translation of f(x)

• If a > 0 then a shift to the left of a units

• If a < 0 then a shift to the right of a units

The black graph is shifted 5 units left, thus

f(x) → f(x + 5)

Under a reflection in the x- axis

a point (x, y ) → (x, - y )

Note that the y- coordinate of the image is the negative of the original

Note also that \frac{y}{-1} = - y, thus

\frac{y}{-1} = f(x + 5) → B

5 0
3 years ago
Read 2 more answers
Use the discriminant to determine how many real number solutions exist for the quadratic equation –4j2 + 3j – 28 = 0. A. 3 B. 2
Zepler [3.9K]

Answer:

C. 0

Step-by-step explanation:

–4j^2 + 3j – 28 = 0

The discriminant is b^2-4ac  if >0 we have 2 real solutions

                                                   =0  we have 1 real solutions

                                                   <0 we have 2 imaginary solutions

a = -4, b =3  c = -28

b^2 -4ac

(3)^2 - 4(-4)*(-28)

9 - 16(28)

9 -448

This will be negative so we have two imaginary solutions.

Therefore we have 0 real solutions

5 0
3 years ago
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s2008m [1.1K]

Answer:

Step-by-step explanation:

-3,5

,5,0

3 0
2 years ago
What is 11/9 reduced to a mixed number?? i cant figure this out
vodomira [7]
Answer:

11/9

=9/9+2/9

=1+2/9
3 0
3 years ago
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