Step-by-step explanation:
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To find the mean you add all the #'s and divide by how many there are. 4+5+6+7 +8= 30 /5 is 6. Tara is right.
Mean Absolute Deviation I'm pretty sure. Hope this helped, have a great day! :D
Since the area of a circle is π

, and our radius is 9 we know the total area to be 254.469, and the ratio of sector area to total area is 169.56/254.469 = .6663. There are 360 degrees in a circle, so:

≈ 240°
240 degrees
1,000 cubic feet because the pyramid is 4000 cubic feet on an area base of 40.