Help me please Spheres of equal size are piled in the form of a complete pyramid with a rectangular base; find the total number of spheres in the pile if the number of spheres in the long side is 5 and that of the short side is 4 until the top layer consists of a single row of 2 spheres.

The number if marbles of different colors stored in a hat is listed below: 4 red marbles 10 green marbles 7 blue marbles. without looking in the hat, dan takes out a marble at random. he replaces the marble and then takes out another marble from the hat. what is the probability that dan takes out a blue marble in both draws?

Write two point-slope equations for the line passing through the points (6, 5) and (3, 1)

Amajor grocery store chain is trying to cut down on waste. currently, they get peaches from two different distributors, whole fruits and green grocer. out of a two large shipments, the manager randomly selects items from both suppliers and counts the number of items that are not sell-able due to bruising, disease or other problems. she then makes a confidence interval. is there a significant difference in the quality of the peaches between the two distributors? 95% ci for pw-pg: (0.064, 0.156)