One of the new trains travels 217.5 miles in 3 hours. what average speed per hour does it make

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)?

Drag the tiles to the boxes to form correct pairs. not all tiles will be used. match each set of vertices with the type of quadrilateral they form

1) prove that 731^3−631^3 is divisible by 100 2) prove that 99^3−74^3 is divisible by 25