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Stels [109]
3 years ago
11

Given that D(x) = 2x, select all of the following that are true statements.

Mathematics
2 answers:
denpristay [2]3 years ago
6 0

Answer:

Step-by-step explanation:

D(x) is a function. TRUE. It is a function of x.

x is the dependent variable. FALSE. x is the independent variable because the function is expressed in terms of the independent variable.

D(6) = 3. FALSE. D(6) = 2(6) = 12. D(6) should be equal to 12.

D(x) is a direct variation. TRUE. This holds true to the definition of direct variation where one variable is related to the other variable at the same constant multple. In this case, it is 2.

D(x) is a rule for the set of points (5, 10), (6, 12) and (-2, -4). TRUE. If you replace x with the first coordinate, the function would be equal to the corresponding second coordinate.

Arisa [49]3 years ago
5 0
<span><em>D(x) is a function.</em> TRUE. It is a function of x.

</span><span><em>x is the dependent variable.</em> FALSE. x is the independent variable because the function is expressed in terms of the independent variable.

</span><span><em>D(6) = 3</em>. FALSE. D(6) = 2(6) = 12. D(6) should be equal to 12.

</span><em>D(x) is a direct variation.</em><span> TRUE.</span><span> This holds true to the definition of direct variation where one variable is related to the other variable at the same constant multple. In this case, it is 2.

</span><span><em>D(x) is a rule for the set of points (5, 10), (6, 12) and (-2, -4).</em> TRUE. If you replace x with the first coordinate, the function would be equal to the corresponding second coordinate.</span>
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Vanyuwa [196]

Answer:

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Step-by-step explanation:

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Since the Lyft charged $0.95 for each mile, we multiply x by 0.95 like this 0.95x

Also, $5 were arleady charged so we add 5 to the total price

y = 0.95x + 5

We have to find a price where both rides match

1.1x + 2 = 0.95x + 5

Let's move the like terms to one side by subtracting 0.95x from both sides

1.1x + 2 = 0.95x + 5

-0.95x   -0.95x

0.15x + 2 = 5

Now, subtract 2 from both sides

0.15x + 2 = 5

         - 2  - 2

0.15x = 3

Finally, divide both sides by the coefficient, 0.15, to isolate the variable, x

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This means they traveled 20 miles if they were to pay the same price

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3 years ago
100min to 2h as a ratio
Usimov [2.4K]

Answer:

100:2 or 50:1

Step-by-step explanation:

Hope this helps!

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Aneli [31]

Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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