Identify the sampling procedure used in this situation. Sandra, a second year facilitator of the same school where Paula works,
is also assigned to look into the study habits of the second year level which
has 7 sections ranging from 43 to 45 students per section. But unlike Paula,
she asked the school registrar a copy of the 2nd year students' ranking from
highest to lowest grades. She then got the names of every 10th student on
the list and scheduled an interview for each selected student.​

2 over 5 and 4 over 15

don’t know last one sorry

step-by-step explanation:

moderators are

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.