Find the product of 3/14 of 10/9

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.

Determine the number of girls in a math class with 87 boys if there are 25 girls for every 75 boys

How much dextrose 70% must be mixed with dextrose 5% to prepare 1,000 ml of dextrose 20%?