Jojo this bar model to find the unknown number of balls find the unknown number 106balls 250 balls

There is an entrance to the computer room at point e which lies on ab and is 5 feet from point a. plot point e on the coordinate plane. find the distance from the entrance at point e to the printer at point e

Whats are the trickiest steps to do when adding or subtracting rational expressions? how does knowledge of rational numbers u in adding and subtracting rational expressions?

The curved part of the figure is the semicircle what is the best approximation for the area of this figure