The scale on a map of the united state is 1 cm =40mi if the distance between albany, n.y. and chicago il on the map is 21 cm what is the actual distance between the cites

Simplify.7x + 3y - 2 + 6x + 1 + y squared 2 you! ; )

What term makes it inconsistent y=2x - 4 ?

The weight of full–grown tomatoes at a farm is modeled by a normal distribution with a standard deviation of 18.4 grams. the 95 percent confidence interval for the mean weight of the tomatoes is calculated using a sample of 100 tomatoes. what is the margin of error (half the width of the confidence interval)?