Use for questions 15-16. Out of a group of 120 students that were surveyed about winter sports, 28 said they ski and 52 said they snowboard. Sixteen of the students who said they ski said they also
snowboard. If a student is chosen at random, find each probability.
-NEED DESPERATE HELP!!!

step-by-step explanation:

let's first notice, the center of the hyperbola is at the origin, since the focus points are equidistantly 3 units away from the origin, that also means that the distance "c" from the center to either focus is 3.

it should also be notable that, the traverse axis for this hyperbola is vertical, or namely over the y-axis and therefore, the positive fraction will be the one with y-variable.

the traverse "a" component or distance from the center to either vertex is not 2, is more than 2, so we can safely put it at √5 ≈ 2.24.