Show that the projection into the xy-plane of the curve of intersection of the parabolic cylinder z=1−5y2 and the paraboloid z=x2+y2 is an ellipse. (a) Find a vector-parametric equation r⃗ 1(t)=⟨x(t),y(t),z(t)⟩ for the ellipse in the xy-plane.

c. (3,2,6) is the answer.

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m

the correct answer is c

i’ll just s take the points thxs