FOR 50 PTS PLZ HELP Write the equation of a parabola with focus (−2,4) and directrix = 6. Show your work, including a sketch.

Simplify the expression below -3(10x+4y)+6(6x-2y)

If a=0.333333 and b=0.55555, what is the value of a+b

Given: abcd is a square. prove: ac ? bd. we are given that abcd is a square. if we consider triangle aeb and triangle aed, we see that side is congruent to side ad because sides of a square are congruent. we know that side ae is congruent to side ae by using the . finally, we know that side de is congruent to side because the diagonals of a square bisect each other. therefore, triangle aeb is congruent to triangle aed by congruency. we see that angle aed and angle aeb are a linear pair, and congruent by cpctc. thus, the measure of these angles will be 90°, and diagonal ac is perpendicular to diagonal bd by the .