Noelle has 5\6 of yards of purple ribbon and 9\10 of a yard of pink ribbon. how much ribbon dose she have altogether?

Solve the system of equations. y= 2x y= x^2 - 15

Determine whether the quadrilateral below is a parallelogram. justify/explain your answer (this means back it up! give specific information that supports your decision. writing just "yes" or "no" will result in no credit.)

F(x) = 1/x g(x)=x-4 can you evaluate (g*f)(0) ? why or why not?