A parabola is a curve where any point is at an equal distance from:
<span><span>a fixed point (the focus ), and </span><span>a fixed straight line (the directrix )</span></span>
The curve is defined by: <span>y</span><span>2</span><span> = 4ax.</span>
1:2 heads 4:6 less than 5 so 4:12
Answer:
the answer is true
Step-by-step explanation:
If the shape is in the upper left quadrant then you reflect it across the x-axis it would be in the lower left quadrant, next you reflect across the y-axis it would be in the lower right quadrant, finally, if you rotate it 180 degrees it would be where it started.
Answer:
<em>The helicopter is 27.38 m far off the ground</em>
Step-by-step explanation:
The drawing shown in the image below has all the measures and variables needed to solve the problem.
We need to find R, the height of the helicopter. We'll use the law of sines to find the length of side a.

The angle X is the measure needed to complete 180°:
X = 180° - 54° - 62° = 64°
Solving for a:

Calculating:
a = 31.11 m
Now using the sine ratio in the right triangle to the left side:

Solving for R:

R=31.11*0.88
R = 27.38 m
The helicopter is 27.38 m far off the ground