Which binomial is a factor of49x^2+84xy+36xy^2

When turned about its axis of rotation, which shape could have created this three-dimensional object?

Aball is dropped from a height of 10m above the ground. it bounce to 90% of its previous height on each bounce. what is the approximate height that the ball bounce to the fourth bounce?

Let x = a + bi and y = c + di and z = f + gi. which statements are true?