Ateachcherhas a bag of 100 cubes. she gives an equil number of cubes to each of the 7 group's in her class. she gives each group as many cubes as she can. how many unit cubes are left over?

The area of a rectangle is 10 cm^2. one side of the rectangle is x cm. express the perimeter of the rectangle in terms of x and show that this rectangle cannot have a perimeter of 12 cm. the perimeter of the rectangle in terms of x is __ cm

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?

What is the length of the segment, endpoints of which are intersections of parabolas y=x^2− 11/4 x− 7/4 and y=− 7 /8 x^2+x+ 31/8 ?