Question

@lυἶცἶ0210

Answer 1

Find the center, vertices, and foci of the ellipse with equation \(\dfrac{x^2}{81}+\dfrac{y^2}{225}=1\)

Answer 2

Center: (0, 0); Vertices: (-15, 0), (15, 0); Foci: (0, -9), (0, 9)
Center: (0, 0); Vertices: (0, -15), (0, 15); Foci: (-9, 0), (9, 0)
Center: (0, 0); Vertices: (0, -15), (0, 15); Foci: (0, -12), (0, 12)
Center: (0, 0); Vertices: (-15, 0), (15, 0); Foci: (-12, 0), (12, 0)

Answer 3

bigger number is under y so it's horizontal
to find foci use this formula \[\large\rm (h \pm c, k)\]

Answer 4

What is c?

Answer 5

b^2 is 81
a^2 225
find C :D