Suppose you want to know how often people want to brush their teeth everyday, so you take a survey. explain why survey results would indicate far more gleaming results than actually exists. (in fact such a survey would indicate twice as much brushing results than actually happens.)

What is the difference between the predicted value and the actual value

7. the area of the playing surface at the olympic stadium in beijing isof a hectare. what area will it occupy on a plan drawn to a scaleof 1: 500?

Someone answer this asap for the length, in feet, of a rectangular rug is represented by the expression 5x² + 2x. the width, in feet, is represented by the expression 3x². which expression represents the perimeter, in feet, of the rug? a. 8x² + 2x b. 8x² + 4x c. 16x² + 2x d. 16x² + 4x