The Russian ruble coin has a radius of 10.25 mm. What is the circumference in terms of Pi? 5Pi

10Pi

10.25Pi

20.5Pi

Which points are solutions to the linear inequality y < 0.5x + 2? check all that apply. (–3, –2) (–2, 1) (–1, –2) (–1, 2) (1, –2) (1, 2)

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?

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? *