What is the median of 10 , 9 , 8 , 13 , 10

Solve the problem by making up an equation. a child is 12 years old, and his father is 32 years older. in how many years will the age of the father be 3 times the age of the child?

Simplify a7/a4 a) 1/a3 b)-a/a2 c)a4/a3 d)a3

Me, the vertices of quadrilateral coat are c(2,0), o(7,0), a(7,2) and t(2,2). prove that coat is a rectangle.