"Break into triangles, then add. In the figure on the right, the polygon can be broken up into triangles by drawing all the diagonals from one of the vertices. If you knowenough sides and angles to find the area of each, then you can simply add them up to find the total." -<span>www.mathopenref.com/polygonirregulararea.html</span>
To get 20/10 as a mixed number you would have to take 20 and divide it by 10. Once you do that your answer should be 2.
<span>f(x)=3-2x
</span><span>f(8)=3-2(8) = 3 -16 = -13
</span><span>g(x)=1/x+5
</span><span>g(8)=1/8+5 = 1/8 + 40/8 = 41/8
</span><span>[f/g](8) = -13 / (41/8) = -13 * (8/41) = -104/41 = -2 22/41</span>
f(5) =2x2-9 because 2x2=4 and 9-4=5
This would be 14C4 = (14*13*12*11) / (4*3*2*1) = 1001
