What is the missing letter in f s t f f s s e

What are the domain and range of the functiony = 2(x - 3)2 + 4?

Find the area of the regular hexagon if a side is 20 cm.

In right ∆abc shown below, the midpoint of hypotenuse ac is located at d and segment bd is drawn. if ab = 12 and bc = 16, then explain why bd = 10. hint: consider what you know about the diagonals of a rectangle.