Yearly 17% rate of failure. answer the following question. what is the probability that if you buy four computers, at least 1 will fail within a year?

Of four points are collinear, they are also coplanar

What unit of been sure would be appropriate for the volume of a sphere with a radius of 2 meters

Asource of laser light sends rays ab and ac toward two opposite walls of a hall. the light rays strike the walls at points b and c, as shown below: what is the distance between the walls?