The ends of a rod slide along the wall and the floor in such a way that the stick falls down while always touching the wall. A little elf is sitting in the middle of the stick and, with a paintbrush, tracing the path along which he moves. What is the elf's path of movement?

Give the equations of two different lines that are perpendicular to the line 3x + 4y = 7.

Acylinder with a base diameter of x units has a volume of jxcubic units which statements about the cylinder are true? check all that apply. the radius of the cylinder is 2 x units. the radius of the cylinder is 2x units. the area of the cylinder's base is 200 square units. the area of the cylinder's base is a square units. the height of the cylinder is 2x units. the height of the cylinder is 4x units. mark this and return save and exit next submit

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.