in the figure below, ∆ABC has DE//BC. AC =25cm, EC =5cm and DB=2,5cm E1 = E2 =x. calculate the numerical value of AD​

Solve the system. -a+4b+2c=-8 3a+b-4c=9 b=-1 a.(0,11) ,-1,2) c.(1,1,-2) d.(2,-1,-1)

Segment xz is bisected by point y. if xy = 12x, and the measure of xz = 18x – 6, solve for x

The total cost of anja’s trip to the dentist was $628.35. she paid a flat fee of $89.95 which included the checkup and cleaning and then had 4 cavities filled, each of which cost the same amount. which shows the correct equation and value of x, the cost of each cavity filling?