What is the perimeter of triangle abc

An equation where variables are used to represent known values—function notation true or false

Julius sold five times as many computers as sam sold last year. in total, they sold 78 computers. how many computers did julius sell?

From the top of a tree a bird looks down on a field mouse at an angle of depression of 50°. if the field mouse is 40 meters from the base of the tree, find the vertical distance from the ground to the bird's eyes.