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Naddika [18.5K]
4 years ago
13

a steel beam can cut two different lengths for a project. assuming the weight of a steel beam is proportional to its length, wha

t information would you need to know to write an equation that represents this relationship?

Mathematics
2 answers:
Firdavs [7]4 years ago
8 0

Answer:

None.

Step-by-step explanation:

You can write a statement of proportionality without any additional information:

... weight = k × length . . . . . . . . for some constant k

If you need to know the specific weight of a specific length, then you need to know the constant of proportionality (the value of k).

xz_007 [3.2K]4 years ago
5 0

Answer:

The value of "k" (the constant of proportionality)

Step-by-step explanation:

First of all, we can define the parameters as:

Length of the steel beam = “L”

Weight of the steel beam = “W”

And we need a constant of proportionality, we define as “K”

Next step, with these parameters, we write the equation that represents the relationship:

W = K * L

So the information you would need is the value of “K”.

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Follow the directions to solve the system of equations by elimination. 8x + 7y = 39 4x – 14y = –68 Multiply the first equation t
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Answer:

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Step-by-step explanation:

We observe that the y-terms have coefficients 7 and -14. If we want to eliminate the y-terms, we need to multiply 7 by a factor that makes it be the opposite of -14. That factor will be -(-14)/7 = 2.

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_____

<em>Check</em>

We used the first equation to find y, so we know the x- and y-values satisfy the first equation. We need to check the result using the second equation.

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Step-by-step explanation:

Please refer to the attached image for explanations

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