Given the following matrix, where a is constant, find the indicated matrix:

e= [ 2a 0 -a

0 1 2

-3 a 0 ]

bonus) e^3

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.