19. Una escalera de 24 pies de largo descansa sobre un terraplén inclinado. El pie de la escalera está a 11 pies de la base del terraplén y la distancia desde la parte superior de
la escalera sobre el talud es de 16 pies. ¿Cuál es el ángulo de inclinación del terraplén?

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

What is x3+3x2−16x−48 divided by x−1?

Your car's gasoline tank holds 18 gallons of gasoline. on a trip in canada, the tank is one-quarter full. you want to fill the tank. how many liters of gasoline are needed to fill the tank