Which conic section results from the intersection of the plane and the double-napped cone shown in the figure? parabola

circle

ellipse

hyperbola

The length of each stair is 11 inches. what is the rise, r, for each stair? round to the nearest inch. 2 inches 7 inches 17 inches 24 inches

Ineed with number 6 , explain how to get 1978

1) in triangle the, what is the measure of angle t (in degrees)? 2) in triangle bat, the measure of angle b is 66∘, and the measure of angle t is 77∘.what is the measure of the exterior angle at a (in degrees)?