Saturday

March 28, 2015

March 28, 2015

Posted by **yumi** on Tuesday, February 26, 2013 at 1:46am.

- pre-calculus -
**Steve**, Tuesday, February 26, 2013 at 4:30ame = c/a = 1/2, so a = 2c

a^2 = c^2+b^2

4c^2 = c^2+b^2

3c^2 = b^2

c = 2, so b^2 = 12, and a^2 = 16

x^2/16 + y^2/12 = 1

**Answer this Question**

**Related Questions**

math/Check! - a. An ellipse is formed by stretching the graph of x^2+ y^2=1 ...

someone please chek my math! - a. An ellipse is formed by stretching the graph ...

maths - Given that the ellipse x^2/a^2 + y^2/b^2 =1 has foci at(+/-ae,0)where e ...

algebra - An ellipse has foci (0,+-3) and vertices (0,+-4). What is the ...

MATH/ Check? - Correct. what is pi The definition or the number? The number is 3...

Precalc - An ellipse has this Cartesian equation: ((x-2)/5)^2 + ((y-4)/3)^2 = 1 ...

Precalc - Write the equation in standard form of the ellipse with foci (8, 0) ...

geometry - The area of an ellipse in the form (x*x/a*a)+(y*y)/(b*b)=1 is A=3.14*...

pre cal - find the standard form of the equation of a parabola with the vertex (...

Algebra - 1. What is the equation an ellipse with foci at (0, ±2 √10 ) and...