A line segment has the endpoints P(-7, 6) and Q(-3, 9). Find the coordinates of its midpoint M
Write the coordinates as decimals or integers.

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

The perimeter of a rectangle is 42 inches. if the width of the rectangle is 6 inches, what is the length

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? *