Ruby ate 1/3 of a pizza and angie ate 1/5 of the pizza. how much of the pizza did they eat in all?

Use the method of cylindrical shells to find the volume v generated by rotating the region bounded by the curves about the given axis.y = 7ex, y = 7e^-x, x = 1; about the y-axis

Which best explains why this triangle is or is not a right triangle ?

Which two fractions are equivalent to 6/11? 6/22 and 18/33 12/22 and 18/33 12/22 and 18/22 3/5 and 6/10