Which equation represents an ellipse? 2x2 – 4xy + 2y2 + x – 3y + 5 = 0
2x2 – 6xy + y2 + 8x – y + 2 = 0
3x2 + 7xy + 8y2 + 3x – 9y + 5 = 0
9x2 + 3x + 9y2 – 2y + 5 = 0

Answer C

Step-by-step explanation:

Got it right on edge

C: 3x^2 + 7xy + 8y^2 + 3x – 9y + 5 = 0

isaiah walks 3 miles due north, turns and then 5 miles due east. how far is he from his starting point?

a^2 + b^2 = c^2

let c = distance from starting point.

(3)^2 + (5)^2 = c^2

9 + 25 = c^2

34 = c^2

sqrt{34} = sqrt{c^2}

sqrt{34} = c

hint: which coefficient is a multiple of 360°?

step-by-step explanation: