Ajar contains four black buttons and five brown buttons. if five buttons are picked at random, what is the probability that at least three of them are black?

Ijust need to see how to do this. so you don’t have to answer all of them just a step by step explanation of one.

Which number line represents the solution set for the inequality -1/2x> 24?

On traditional maps, earth is represented in a flat plane, or by euclidean geometry. however, a globe is a more accurate model that comes from elliptical geometry.how does a globe represent the fact that there are no parallel lines in elliptical geometry? the equator is not parallel to any other latitudinal lines. the north and south poles are never connected by a geodesic. the geodesics connecting the north and south poles never intersect. the geodesics connecting the north and south poles intersect at both of the poles.