How can a mixed number be written as a sum ? ·ω·

The fence around a quadrilateral-shaped pasture is 3a^2+15a+9 long. three sides of the fence have the following lengths: 5a, 10a-2, a^2-7. what is the length of the fourth side of the fence?

Find the center of the circle that can be circumscribed about efg with e(4,4) f(4,2) g(8,2)

Abuilder divides a rectangular plot in half along the diagonal. if the plot is 1\2-mile wde and the diagonal measures 1 3\10-miles long, what is the length of the plot?