The probability of rolling a number less than 3 on a number cube is Jennifer rolls a number cube 60 times.
How many times should Jennifer expect to roll a number less than 3?
A. 10
B. 20
C. 30
D. 40
E 50

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.

Pls if a cow has a mass of 9×10^2 kilograms, and a blue whale has a mass of 1.8×10^5 kilograms, which of these statements is true?

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15