A^2 + 16^2 = 20^2
(Third one)
Answer:
measure of supplementary angle 180-69.3=110.7
Answer is c: 24-3x 8+-11=-3
Well to begin, you'll need a graph but you have to do:
y2-y1
---------
x2-x1
(Which is the average rate of change formula.)
In order to find your "y" you look for your x on the graph the move either direction until you touch the graph. Hope this helps.. :)