the height of an object dropped from the top of a 300 ft tall building can be described by the expression 300 - 1.6t to the second power where T is the time in seconds after the ball is dropped find the height of the object 5.5 seconds after it is dropped

If x=-3 is the only x-intercept of the graph of a quadratic equation, which statement best discribes the discriminant of the equation?

In the following diagram it is given that dec,ab || dc, ad || eb, and ad is congruent to bc. a)why isn't abc a parallelogram even though it has a pair of parallel sides and a pair of congruent sides b)explain why be must be congruent to bc. further explain what type of triangle this makes triangle abc and what it tells you about angle 1 and angle 2c) finally why must angle 3 be congruent to angle 1? further, explain why we know that angle 3 is congruent to angle 2

Through non-collinear points there is exactly one plane.