What value of r makes –6r + 2(r + 2) – 5 = -20 true?
1 answer:
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To solve this problem you must apply the proccedure shown below:
1. You have that:
-The length is feet.
- The width is feet.
- The height is feet.
2. The box has one base. The cost of the base is:
3. It has four sides. The cost of the sides are:
The answer is: The total cost is
The horizontal distance from the firefighter at which the maximum height of water occurs is 10.83m
<u>Explanation:</u>
Given:
h(x) = -0.026x² + 0.563x + 3
where,
h(x) is the height of the water
Initial speed, u = 14m/s
angle, θ = 30°
(a)
Horizontal distance = ?
h(x) = ax² + bx + c
the vertex is found at x = -b/2a
where,
x = distance to the maximum height
As compared to the equation given:
a = -0.026
b = 0.563
Thus,
Therefore, horizontal distance from the firefighter at which the maximum height of water occurs is 10.83m