The three interior angle measures of this triangle

1. if events a and b are non-overlapping events, how do you find the probability that one or the other occurs? 2. what does it mean if p(a or b) equals 1?

What is the ratio for the surface areas of the cones shown below, given that they are similar and that the ratio of their radii and altitudes is 2: 1? submit

The graph shows the amount of total rainfall at each hour what was the total rainfall amount after three hours