6. 180 - 50 - 35 = 95
7. 360 - 70 - 80 - 85 = 125
Answer:
Step-by-step explanation:
The directrix y=-6 is parallel to the x axes, so parabola has equation of the form
where 
is the vertex of parabola and p is parabola's parameter.
By the definition, 
is the distance from the vertex to the directrix, so
Hence, the equation of parabola is
See attached diagram for the graph of parabola and its directrix.
In vertex form this equation is
Answer:
Step-by-step explanation:
First view 2x-5y<15 as the equation 2x - 5y = 15. Find the x- and y-intercepts and plot them:
x-intercept: let y = 0 and find x: x = 15/2. Plot (0, 15/2).
y-intercept: Let x = 0 and find y: y = -3. Plot (0, -3).
Draw a dashed line through these two points. Shade the area BELOW this line.
Answer:
Vertical
Step-by-step explanation:
They are vertical angles to each other
