Step-by-step explanation:
The equation of a parabola with focus at (h, k) and the directrix y = p is given by the following formula:
(y - k)^2 = 4 * f * (x - h)
In this case, the focus is at the origin (0, 0) and the directrix is the line y = -1.3, so the equation representing the cross section of the reflector is:
y^2 = 4 * f * x
= 4 * (-1.3) * x
= -5.2x
The depth of the reflector is the distance from the vertex to the directrix. In this case, the vertex is at the origin, so the depth is simply the distance from the origin to the line y = -1.3. Since the directrix is a horizontal line, this distance is simply the absolute value of the y-coordinate of the line, which is 1.3 inches. Therefore, the depth of the reflector is approximately 1.3 inches.
Answer:
Step-by-step explanation:
if motivational posters are placed in the walls of classrooms, then GPAs will/will not (you would decide this) increase/remain the same (based on your previous choice)
Answer:
B?
Step-by-step explanation:
Can I have brainliest? It would help me out, if not thanks anyways! Hope this helped and have a nice day!
Both sides of one wall would be 90 square feet. 2 coats of paint for both sides would be 180 square feet. There are 5 walls, so the square feet to be painted is 5(180)=900
So, Peter needs 900/x gallons of paint.
Answer:
(a) The missing number in the first row is 9, the second row is 15 and 60 and third row is 54 and 36.
(b) 15
(c) 2/3
(d) because most people that failed had under 20 driving lessons
Step-by-step explanation:
I hope this was helpful!!!!