During the Target. com sale, Tameka bought a pair of rollerskates at 40% off of the original price. If she saved $50, what was the orignial cost of the rollerskates?

Which of the following points is collinear with (-2,1) and (0,3)

Abicycle training wheel has a radius of 3 inches. the bicycle wheel has a radius of 10 inches.approximately how much smaller, in square inches and rounded to the nearest hundredth, is the area of the training wheel than the area of the regular wheel? *

The areas of two similar triangles are 72dm2 and 50dm2. the sum of their perimeters is 226dm. what is the perimeter of each of these triangles?