Omi67

Line l_1 has equation 3x - 2y = 1 and goes through A = (-1, -2). Line l_2 has equation y = 1 and meets line l_1 at point B. Line l_3 has positive slope, goes through point A, and meets l_2 at point C. The area of triangle ABC is 3. What is the slope of l_3?

or

q.e.d

1.    In $\triangle ABC$, the acute angles are $\angle B=60^\circ$ and $\angle C=30^\circ$. The centroid of $\triangle ABC$ is $G$. If $AB=1,$ what is  

       $AG?$

The equation y = -16t^2 - 18t + 405 describes the height (in feet) of a ball thrown downward at 18 feet per second from a height of 405 feet from the ground, as a function of time t, in seconds. In how many seconds will the ball hit the ground?

A point P lies on the hyperbola (x^2/)36 - (y^2)/16 = 1. The distance from P to one focus is 7. What is the distance from P to the other focus?

Determine if the graph of the equation below is a parabola, circle, ellipse, hyperbola, point, line, two lines, or empty.

x^2-50y^2-10x+25=0. 

Kann mir bitte jemand die Lösung erklären?

2. In triangle ABC, the acute angles are angle B=60 and angle C=30. The centroid of triangle ABC is G If AB=1, what is AG? (no picture)

Hier ist die Hilfe !

                                                           q.e.d.

The vertex is at (3,-5).
The parabola is opened downwards because there is a minus in front of the bracket.