9 Answered Questions for the topic Ellipses

Ellipses Algebra

10/23/17

#### To 2 decimal places, what is the value of d?

An ellipse has equation ax2+by2=c where a = 20, b = 45 and c = 232. One of the vertices, (0, d), lies on the positive y-axis. To 2 decimal places, what is the value of d?

09/21/17

#### Find exact equation of tangent line and normal line

find equation of tangent line and normal line given x2/25 + y2/9 = 1 with coordinates (5sqrt(2)/2, 3sqrt(2)/2)
Ellipses Conics

05/18/16

#### The equation

The equation 4x^2+9y^2-36y = 0 defines a shifted ellipse. Write this equation in the standard form, find the center, focus, vertices of this ellipse, the lengths of major and minor axes and sketch... more

05/05/16

#### An arch is in the form of a semi-ellipse whose span is 24 feet wide. The height of the arch is 10 feet. Find the equation of the ellipse.

A. x2/24 + y2/10 = 1B. x2/144 + y2/100 = 1C. x2/100 + y2/576 = 1D. x2/576 - y2/100 = 1
Ellipses

09/16/15

#### I need help with ellipses and graphing them. Help would be appreciated

standard form of 3x^2+5y^2-12x+30y+42=0
Ellipses

09/15/14

#### write the equation of an ellipse centered at the origin that has a horizontal major axis, e=1/2, and 2c=1

how do I solve this, write an equation of an ellipse center at the origin that has a horizontal major axis,e=1/2,and 2c=1
Ellipses

09/15/14

#### Given the Ellipses formula, I need help in how to solve for b^2.

x^2/a^2 + y^2/b^2 = 1 solve for b^2

05/17/14

#### Find the vertices, foci and eccentricity of the ellipse. 9x2 + y2 = 81

Find the vertices, foci and eccentricity of the ellipse. 9x2 + y2 = 81 I would like to see the steps and the answer to better understand it
Ellipses

05/16/13

#### Vertex at (0,5); co-vertex at (1,0)

Write an equation in standard form for the ellipse with the center at the originĀ

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