Determine whether ABCD is a parallelogram if the side length are 4,5,5, and 4 in oder around the parallelogram. justify your answer​

Me answer number 3plz explain how you do it

Afactory adds 3 red drops and 2 blue drops of coloring to white paint to make each pint of purple paint. the factory will make 50 gallons of the purple paint.how many drops of red and blue coloring will the factory need in the 50 gallon batch of purple paint.

Satchi found a used bookstore that sells pre-owned dvds and cds. dvds cost $9 each, and cds cost $7 each. satchi can spend no more than $45.