Aquantity with an initial value of 3900 decays exponentially at a rate of 35% every hour. what is the value of the quantity after 0.5 days, to the nearest hundredth?

2y= 3 2 x−2 y = − 1 3 x + 1 y=− 3 1 x+1

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.

Solve 3x-18=2y and 5x-6y=14 by elimination or substitution . show all !