Answer:
111.33667
Step-by-step explanation:
You add percentages just like you would any other number.
122.9% + 108.46% + 102.65% = 334.01%
334.01%/3 = 111.33667
Answer:
y = 1/12 (x − 5)²
Step-by-step explanation:
We can solve this graphically without doing calculations.
The y component of the focus is y = 3. Since this is above the directrix, we know this is an upward facing parabola, so it must have a positive coefficient. That narrows the possible answers to A and C.
The x component of the focus is x = 5. Since this is above the vertex, we know the x component of the vertex is also x = 5.
So the answer is A. y = 1/12 (x−5)².
But let's say this wasn't a multiple choice question and we needed to do calculations. The equation of a parabola is:
y = 1/(4p) (x − h)² + k
where (h, k) is the vertex and p is the distance from the vertex to the focus.
The vertex is halfway between the focus and the directrix. So p is half the difference of the y components:
p = (3 − (-3)) / 2
p = 3
k, the y component of the vertex, is the average:
k = (3 + (-3)) / 2
k = 0
And h, the x component of the vertex, is the same as the focus:
h = 5
So:
y = 1/(4×3) (x − 5)² + 0
y = 1/12 (x − 5)²
My bad if I read it wrong but I got 4.17
The easiest way to solve this problem is by calculating the areas of all the sides and adding them together.
<em>Step 1; Calculate the area of the rectangular front & back</em>
A = 2 * (l * w)
= 2 * (25 * 10)
<em>Step 2; Calculate the area of the rectangular sides </em>
A = 2 * (1 * w)
= 2 * (55 * 10)
= 1100 ft^2
70 inches (length)
101 feet (wide)
8 inches (high)
101×12= 1,212
*to convert the 101 feet to inches
70×1,212×8= 678,720 inches³
