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svetoff [14.1K]
3 years ago
14

= -4 \\y=5" alt="2xy^{2} -3xy-7\\x= -4 \\y=5" align="absmiddle" class="latex-formula">
Mathematics
1 answer:
nika2105 [10]3 years ago
4 0

Answer:

this is too easy

Step-by-step explanation:

cos

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Find center,foci, and vertices of ellipse (x+3)^2/21+(y-5)^2/25=1
sasho [114]
I don't know if we can find the foci of this ellipse, but we can find the centre and the vertices. First of all, let us state the standard equation of an ellipse. 

(If there is a way to solve for the foci of this ellipse, please let me know! I am learning this stuff currently.) 

\frac{(x-x_{1})^2}{a^2}+ \frac{(y-y_{1})^2}{b^2}=1

Where (x_{1},y_{1}) is the centre of the ellipse. Just by looking at your equation right away, we can tell that the centre of the ellipse is: 

(-3,5)

Now to find the vertices, we must first remember that the vertices of an ellipse are on the major axis. 

The major axis in this case is that of the y-axis. In other words, 

b^2>a^2 

So we know that b=5 from your equation given. The vertices are 5 away from the centre, so we find that the vertices of your ellipse are: 

(-3,10)
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I really hope this helped you! (Partially because I spent a lot of time on this lol) 

Sincerely,

~Cam943, Junior Moderator
6 0
4 years ago
This is an off topic question but i feel the need to let other peoples brains keep running so these are the questions i will giv
serg [7]
<span>−4.6−(0.4+7.2)
</span><span>−20+(−40)+(−60)

4 and 5 is properties of addition

-80 is your answer

hope this helps</span>
6 0
3 years ago
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Need help As soon as possible!!
emmasim [6.3K]
I think the fourth option is the answer. It wi give you the Side angle side postulate.
4 0
3 years ago
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