10 students in year 7 are asked how long it takes them to walk to school in minutes. Here are the the responses from the frost 9 students that where asked.20 10 30 25 20 40 35 30 40 25

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.

Add the two expressions 3.8b - 7 and 2.9b + 9 enter your answer in simplified form

If sec theta = 5/3 and the terminal point determined by theta is in quadrant 4, then