Linda finished her chemistry homework in 1/5 hours. Then she completed her math assignment in 2/3 hours. What was the total amount of time Linda spent doing these two assignments

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.

Simplify. (-2)^-3 a. -8 b. -1/8 c. 1/8 d. 8

Factor the expression using the gcf. the expression 21m−49n factored using the gcf