Which value of x makes 2(x+8)=40 *
A x=20
B x=12
Cx=42
plz help me

Write the system of equations represented by the matrix. 0 1 2 4 -2 3 6 9 1 0 1 3

Can someone me and do the problem plz so i can understand it more better

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.