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rodikova [14]
3 years ago
15

I need help ASAP

Mathematics
1 answer:
Burka [1]3 years ago
4 0

Answer:

See graph of the two conics in the attached picture

Step-by-step explanation:

We create two vertices for the ellipse on the y-axis located at the points (0,2) and (0, -2) (marked with orange dots in the picture) and then create the equation for the ellipse such that its focus coincide with the place for the trees as requested. Recalling the formula for the position of the focus (c) for a horizontal ellipse of the form: \frac{x^2}{a^2} +\frac{y^2}{b^2} =1\\c=\sqrt{a^2-b^2} \\

Since our b value is 2 (choice of two vertices above), we have:

c=\sqrt{a^2-b^2} \\3=\sqrt{a^2-2^2}\\3^2=a^2-4\\a^2=9+4=13

So now we can complete the equation of our ellipse with the trees at (-3,0) and (3,0):

\frac{x^2}{13} +\frac{y^2}{4} =1

Now we create the horizontal hyperbola of general form: \frac{x^2}{a^2} -\frac{y^2}{b^2} =1\\c=\sqrt{a^2+b^2}

We request the same values for "c" and for "b" as we did with the ellipse:

c=\sqrt{a^2+b^2} \\3=\sqrt{a^2+2^2}\\3^2=a^2+4\\a^2=9-4=5

So now we can write the equation for this horizontal hyperbola:

\frac{x^2}{5} -\frac{y^2}{4} =1

Both conics are plotted in the attached image, and their respective vertices that correspond to (-\sqrt{13} , 0) and (\sqrt{13} , 0) for the ellipse, and (-\sqrt{5} , 0) and (\sqrt{5} , 0) for the hyperbola, are indicated with blue dots and orange dots respectively.

The location of the trees (focus) is indicated with red dots.

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How to solve 4n²-3n-7=0
almond37 [142]
4n^2-3n-7=0\\ \\ a=4, \ \ b=-3 \ \ c=-7\\ \\ \Delta = b^{2}-4ac = (-3)^{2}-4*4* (-7)= 9+112=121

x_{1}=\frac{-b-\sqrt{\Delta }}{2a} =\frac{ 3-\sqrt{ 121}}{2*4}=\frac{ 3-11}{8}= \frac{-8 }{ 8}=-1 \\ \\x_{2}=\frac{-b+\sqrt{\Delta }}{2a} =\frac{ 3+\sqrt{ 121}}{2*4}=\frac{ 3+11}{8}= \frac{14 }{ 8}= \frac{7}{4}=1\frac{3}{4}


4 0
3 years ago
Read 2 more answers
Hey please help this is due today ​
Aleksandr [31]

Answer:

100

Step-by-step explanation:

Write in an equation:

4=4%x, then divide 4% from both sides, and then you get 100.

7 0
2 years ago
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Carl’s square swimming pool has a volume of 1000 cubed feet. What are dimensions of his pool?
RUDIKE [14]

Answer: the answer is down bellow

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5 0
3 years ago
Simplify 2x - 8x - 6y + 9 -14 + x + 11y.
raketka [301]
We can see that 2x - 8x + x = -5x
and -6y + 11y = 5y
and 9 - 14 = -5
so simplified, it is -5x + 5y - 5
8 0
2 years ago
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A Fraction Number: The sum of the numerator and denominator is 40. if its value is 3/5 after simplifying, what is the fraction b
katrin2010 [14]
Here: Fraction = 3/5
Let, original fraction (before simplifying) = 3x/5x
Then, 3x + 5x = 40
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So, 3x = 3(5) = 15 & 5(5) = 25

In short, Your Answer would be 15/25

Hope this helps!
5 0
3 years ago
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