you select a marble from those seen without looking and then put it back. if you do this 5 times, what is the best prediction possible for the number of times you will pick a purple marble? a. 1 b. 2 c. 3 and d. 4

Given right triangle xyz, which correctly describes the locations of the sides in relation to

One of the complementary angles is 4 degrees mor than the other. find the angles (recall that complementary angles are angles whose sum is 90 degrees.) which of the following can not be used to solve the problem if x represents one of the angles? a. 2x-4=90 b. 2x+4=90 c. x+4=90

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?