Answer
Foci: $( 0, \pm 2 )$
Vertices : $( 0,\pm 5/2)$
Work Step by Step
$100x^2+36y^2=225$
Rewrite as $\frac{x^2}{(3/2)^2}+\frac{y^2}{(5/2)^2}=1$
$c^2=a^2-b^2=4$ $c=2$
Foci: $( 0, \pm 2 )$
Vertices : $( 0,\pm 5/2)$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.