Can someone answer both or one of these questions?

The table shows the distance traveled over time while traveling at a constant speed.

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.

Find the values of the variables and the lengths of the sides of this kite.