What is the distance between -10 and 10 on the number line?

The given dot plot represents the average daily temperatures, in degrees fahrenheit, recorded in a town during the first 15 days of september. if the dot plot is converted to a box plot, the first quartile would be drawn at __ , and the third quartile would be drawn at __ link to graph: .

What percent of the circle below is shaded?

Prove that quadrilateral is a rhombus.