9514 1404 393
Answer:
8√3 ≈ 13.86 ft
Step-by-step explanation:
The light source is usually placed at the focus, so the focus-vertex distance is p=3 ft. The equation for the parabola with its vertex at the origin is ...
y = 1/(4p)x^2
y = 1/12x^2
The opening for some y-value extends ±x from the axis of symmetry, so is a total of 2x in width.
For y=4, the corresponding value of x is ...
4 = 1/12x^2
48 = x^2
√48 = x = 4√3
Then the width of the searchlight opening is ...
2(4√3 ft) = 8√3 ft ≈ 13.86 ft
Answer:
what we have to do in this question? I mean what we have to find
Answer:
Step 3: 40 + 12 + (18 + 27) = 40 + 12 + 18 + 27
Step 4: 97 (its the answer)
Step-by-step explanation:
Step 3: 40 + 12 + (18 + 27) = 40 + 12 + 18 + 27 = 97
Step 4: 97
Answer:
The answer to your question is: Yes, x - 5 is a factor of the polynomial.
Step-by-step explanation:
To answer this question you need to divide the polynomial by the factor and if there is nothing left, they are factor.
<u>x³ -4x² -7x +10</u>
x -5
x² + x -2
x-5 x³ -4x² -7x +10
-x³ + 5x²
x² - 7x
-x² + 5x
-2x + 10
+2x -10
0 0 These zeros tell us that the linear
expression is a factor of the polynomial