They always say to do the problem in parentheses first
Assume the parabola is placed on a graph where the x-axis is the top of the dish.
The vertex is then at (0,-30) The x-intercepts or zeros are at (-30,0) and (30,0)
The equation of such parabola would be:

Plug in vertex to find value of 'a'

Now find the focus given that


Answer: the microphone should be placed 7.5 inches from vertex.
Answer:
d=-8
Step-by-step explanation:
-8 × -4=+32 ....always remember a positive number and negative number equals a negative number and negative number times a negative number is a positive number
m<JKL=45°
Please see the attached picture for full solution
hope it helps..
Good luck on your assignment...
X * (x + 10) = y - 40
(x + 2)(x + 12) = y
x^2 + 10x = x^2 + 14x + 24 - 40
10x = 14x - 16
-4x = -16
x = 4
4 + 10 = 14
The length of the original painting is 14 inches long.