At a college, 65% of courses have final exams and 46% of courses require research papers. Suppose that 31% of courses have a research paper and a final exam. Find the probability that a course has a final exam or a research paper. Find the probability that a person does NOT have both type O blood and the Rh− factor.

i think that you should ask google for the answer to that problem because if we don't know it google does

i think the amount would be $140.62

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.

it's possible to build a triangle with side lengths of 3, 3, and 9.- true ( b.)