Answer:
2
Step-by-step explanation:

You subtract the % that the sale is and take it away from 100%. You get 75% then take the original price and divide it by .75
Answer:
Angle C
Step-by-step explanation:
It is an isoceles triangle.
Answer:
6.93 cm
Step-by-step explanation:
You have a right triangle (90°), so you do as follow:
If I understand correctly, you are looking for the hypotenuse so

That is equal to 
Answer:
Plane T
Step-by-step explanation:
The given points A, D, and E are shown as being on the plane T as follows
Point a lays on the boundary of the boundary between plane S and plane T
Points D and E are points on a line DE that is on the plane T
Therefore, given that the line DE and the point A all lay on the same plane T, the plane that contains points A, D, and E, is plane T.