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Katena32 [7]
4 years ago
13

A bridge on a river is modeled by the equation h = -0.2d^2 + 2.25d, where h is the height and d is the horizontal distance. For

cleaning and maintenance purposes a worker wants to tie a taut rope on two ends of the bridge so that he can slide on the rope. The rope is at an angle defined by the equation -d + 6h = 21.77. If the rope is attached to the bridge at points A and B, such that point B is at a higher level than point A, at what distance from the ground level is point A?
Mathematics
1 answer:
Gelneren [198K]4 years ago
7 0
We are given the equations
h = -0.2d² + 2.25d
-d + 6h = 21.77

Solving for d in the second equation:
-d + 6h = 21.77
d = 6h - 21.77
Substituting to the first equation:
h = -0.2(6h - 21.77)² + 2.25(6h - 21.77)
The value of h can then be solved with is
h = 3.9968
so
d = 2.2108
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Domain and range of graph need ASAP
Lostsunrise [7]

Answer:

Domain: -6 \leq x \leq 3

Range: -3 \leq x \leq 6

Step-by-step explanation:

The domain is the set of real values which can be inputted into a function and produce a real output. In this case, the domain is the following: -6 \leq x \leq 3, because this is the set of real values for which the function will produce a real output.

The range is the set of real values which a function outputs when a value from the domain is entered into the function. This is the set of y-values that one can see on the graph, the possible y-values are in between (-3) and (6).

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2 years ago
Find sum of three consecutive even integers if the largest integer is Y
KATRIN_1 [288]

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3 years ago
I need an equation that equals -5
RoseWind [281]
-4 - 1 = -5 can be an equation that equals -5.
8 0
3 years ago
Read 2 more answers
<img src="https://tex.z-dn.net/?f=7%20%7Bx%7D%5E%7B3%7D%20%20%2B%204x%20-%205%20%2B%208%20%7Bx%7D%5E%7B5%7D%20" id="TexFormula1"
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The degree of a polynomial is determined by the largest exponent of a term within the polynomial.

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3 years ago
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erma4kov [3.2K]

To find the answer, take the measurement of an edge of the cube, multiply it by 6, and then square that number.

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I hope this helps! :)

4 0
3 years ago
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