A vector r= (a, b,c) has a direction angle of 45 degrees with the positive x axis and a direction angle of 130 with the positive y axis. The bestie has a magnitude of 8 and makes an obtuse angle with the positive z axis. Determine a, b and c

What is the volume of a rectangular prism if the length is 10.4 mm the width is 5 mm in the height is 8 mm

Aball is dropped from a height of 10m above the ground. it bounce to 90% of its previous height on each bounce. what is the approximate height that the ball bounce to the fourth bounce?

Aclassroom is made up of 11 boys and 14 girls. the teacher has four main classroom responsibilities that she wants to hand out to four different students (one for each of the four students). if the teacher chooses 4 of the students at random, then what is the probability that the four students chosen to complete the responsibilities will be all boys?