the plane z=3 intersects the sphere x^2+y^2+z^2=25 in a circle. Illustrate this with a stech and find the area of the circle.

Find the length of the diagonal of the rectangle. round your answer to the nearest tenth. || | | 8 m | | | | 11 m

Varies inversely with x. if y=8.5 when x=-1 find x when y=-1

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?