Aparabola has a vertex at (0,0). the equation for the directrix of the parabola is x  = –4.in which direction does the parabola open?

Find the greatest common factor of the followig monomials 21u^5v,3u^4v^6, and 3u^2v^5

5, 6, 10 question: a. determine whether the side lengths form a triangle. (explain your reasoning) b. if it is a triangle, determine whether it is a right, acute, or obtuse triangle. (show your work)

The graph shows the decibel measure for sounds depending on how many times as intense they are as the threshold of sound. noise in a quiet room is 500 times as intense as the threshold of sound. what is the decibel measurement for the quiet room? 20 decibels28 decibels200 decibels280 decibels