On graph paper, draw diagrams of a+a+a+a and 4a when a is 1, 2, and 3. What do you notice?

Solve the equation x/4 - 5= -8 -27 -12 -7 12

The median am of triangle ∆abc is half the length of the side towards which it is drawn, bc . prove that triangle ∆abc is a right triangle, and find angle mac and abm

Cd is the perpendicular bisector of both xy and st, and cy=20. find xy.