Help! What does the bracket mean and how do I do the questions?

Drag each scenario to show whether the final result will be greater than the original value, less than the original value, or the same as the original value. 1. a 25% decrease followed by a 50% increase 2. a 20% decrease followed by a 25% increase

Eis the midpoint of line segment ac and bd also line segment ed is congruent to ec prove that line segment ae is congruent to line segment be

Select the number of ways in which a line and a circle can intersect