Write a number story to fit this number sentence. 20- (3x6) =2

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.

If a || b and b | y, then ? a) x || y. b) x | a. c) a | y. d) a || y.

65% of students in your school participate in at least one after school activity. if there are 980 students in you school, how many do not participate in an after school activity?