I want to cut 10 identical rectangles, each 6cm x 10 cm, from rectangular plastic boards that are 15 cm x 20cm. Each of the 10 rectangles must be cut out as one piece – joins are not allowed. What is the smallest number of plastic boards that I can use?

The total cost of anja’s trip to the dentist was $628.35. she paid a flat fee of $89.95 which included the checkup and cleaning and then had 4 cavities filled, each of which cost the same amount. which shows the correct equation and value of x, the cost of each cavity filling?

If 1.4% of the mass of a human body is calcium, how many kilograms of calcium are there in a 165-pound man? 1.0 kg ca 5.1 kg ca 1.0 x 102 kg ca 5.1 x 102 kg ca

Which statement accurately explains whether a reflection over the y axis and a 270° counterclockwise rotation would map figure acb onto itself?