What is bigger 40% of 90 or half of 80

Which of the following is a justification used while proving the similarity of triangles lom and mon

65% of students in your school participate in at least one after school activity. if there are 980 students in you school, how many do not participate in an after school activity?

For problems 29 - 31 the graph of a quadratic function y=ax^2 + bx + c is shown. tell whether the discriminant of ax^2 + bx + c = 0 is positive, negative, or zero.