Everyone in andy's class has to do a science project. out of the 20 students, 80% have completed their projects. how many students still needs to finish their projects a.100 students b.36 students c.16 students d.4 students

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?

Select the correct answer what is the most direct use of a compass in geometric constructions? a. to draw congruent angles b. to draw arcs of a given size c. to draw perpendicular lines d. to draw straight lines reset next next

In the diagram of circle o, what is the measure of zabc?