A^2 + b^2 = c^2 a=4 b= 6
4^2 + 6^2 =52
square root that:
c=2 square root 13 exactly or 7.2 approximately <span />
Answer:
The rate of change is <em>17.9 dollars per year</em>.
Step-by-step explanation:
We use the rate of change formula: 
where y2 and x2 and the y and x points respectively of the second point, and y1 and x1 are the y and x points respectively for the frist point.
In our case, the first point's x is 2003 (earlier date) and y is 551 (price).
The second point's x is 2013 (date) and y is 730 (price).
Plugging in the numbers, we get 
This means the rate of change is 17.9 dollars per year.
11. x = 10, so DCE is 72. You get the measurement of x by adding 7x + 2 and x + 8 to equal 90. When you get x, you plug it in to the equation for DCE.
12. x = 17. KNM is 131. Get the measurement of x by adding both equations again, this time equaling it to 180 since it is a straight line and doesn't have a right angle. Plug in the x to the equation for KNM.
