Gina has 40 yards of fencing to enclose a rectangular area. What is the maximum area that can be enclosed by the fence? What are the dimensions of the area enclosed?

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.)

Measures of the angle of r, 31 s (x+4) t (3x+9)

Yvaries inversely as x. y =12 when x=5. find y when x=4