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Let’s check out your problem:
Write the equation in standard form for the ellipse
x
2
+
3
y
2
−
21
=
0
x^2 + 3y^2 - 21 = 0
x
2
+
3
y
2
−
21
=
0
.
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Math Problems
Algebra 2
Convert equations of ellipses from general to standard form
Full solution
Q.
Write the equation in standard form for the ellipse
x
2
+
3
y
2
−
21
=
0
x^2 + 3y^2 - 21 = 0
x
2
+
3
y
2
−
21
=
0
.
Divide by
21
21
21
:
Now, divide each term by
21
21
21
to get the standard form of the ellipse.
x
2
21
+
3
y
2
21
=
21
21
\frac{x^2}{21} + \frac{3y^2}{21} = \frac{21}{21}
21
x
2
+
21
3
y
2
=
21
21
Simplify fractions:
Simplify the equation by reducing the
fractions
.
x
2
21
+
y
2
7
=
1
\frac{x^2}{21} + \frac{y^2}{7} = 1
21
x
2
+
7
y
2
=
1
Equation in standard form:
The equation is now in standard form for an ellipse.
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What is the length of the major axis of the ellipse
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Question
What is the center of the ellipse
(
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Question
The equation of an ellipse is given below.
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x
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1
1
answer:
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(A)
(
−
15
+
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4
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−
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4
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4
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Question
The equation of an ellipse is given below.
\newline
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x
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y
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7
)
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\newline
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7
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7
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+
3
,
7
)
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(
5
−
3
,
7
)
(5-\sqrt{3}, 7)
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7
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Question
The equation of an ellipse is given below.
\newline
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2
46
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y
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=
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2
+
26
(
y
+
8
)
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=
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\newline
What are the foci of this ellipse?
\newline
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1
1
1
answer:
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0
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20
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8
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Question
Write an equation for an ellipse centered at the origin, which has foci at
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Question
Write an equation for an ellipse centered at the origin, which has foci at
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