the manufacturing cost of a cell phone was $124 sellers first marked up the cost by 20% sales or force or seller's decrease the mark of the 15% calculate the old and new selling prices​

Ammonia molecules have three hydrogen atoms and one nitrogen atom.how many of each atom arein five molecules of ammonia

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

Valentina is subtracting from . she finds the lcd to be 15y2. what is valentina's next step?