2010006301

SubArea: 
Conics
Level: 
A
Project ID: 
2010006301
Source Problem: 
1003020401
Accepted: 
0
Clonable: 
1
Easy: 
0
The equation of an ellipse is given by \( 9x^2+5y^2+18x-30y+9=0 \). The length of its semi-minor axis is:
\( \sqrt5\)
\(5\)
\(9\)
\(3\)
\(2\)