The numbers on a certain combination lock start with 0 and go through 10. If a combination consists of 3 numbers, how many different lock combinations are possible?

If angle 2=3x +1 and angle 3=2x +4what is angle 2

Describe the symmetry of the figure. identify lines of symmetry, if any. find the angle and the order of any rotational symmetry.

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? *