The dot plots below show the test scores of seventh- and eighth-grade students: Based on visual inspection of the dot plots, which grade, if any, appears to have the higher mean score? Grade 7 Grade 8 Both groups show about the same mean score. No conclusion about mean score can be made from the data. Grade 7 : 6 dots for 50,4 dots for 60, 6 dots for 70,4 dots for 80. Grade 8 : 7 dots for 60 ,4 dots 70,4 dots for 80,3 dots for 90 ,and 2 dots for 100.

Which is the length of the hypotenuse of the triangle a. 94ft b. 214 ft c. 33ft d. 37 ft

Determine whether the following statements are true and give an explanation or counterexample. bold a. when using the shell method, the axis of the cylindrical shells is parallel to the axis of revolution. bold b. if a region is revolved about the y-axis, then the shell method must be used. bold c. if a region is revolved about the x-axis, then in principle it is possible to use the disk/washer method and integrate with respect to x or the shell method and integrate with respect to y.

How long does it take natsumi to clean up after she is done? table: .area time30. 245. 2.7560. 3.5