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Mama L [17]
3 years ago
15

Please, I need help: Define the function $f(x) = 2x - 5$. For what value of $x$ is $f(x)$ equal to $f^{-1}(x)$?

Mathematics
1 answer:
joja [24]3 years ago
6 0

Answer:

  5

Step-by-step explanation:

A function is equal to its inverse on the line y = x. So, we can find the required value of x by substituting for y:

  y = 2x -5

  x = 2x -5 . . . . substitute y = x

  5 = x . . . . . add 5-x to both sides

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Each shape is 1 whole. What fraction is represented by the shaded part of the model?
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Answer:

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Step-by-step explanation:

Each shape is 1 whole.

In the given image, there are 4 parts in each shape.

The shaded part in the first shape is 4.

The fraction of the shaded part in the first shape

                                            =\frac{Number of shaded part}{Total part of the fraction}=\frac{4}{4}

The shaded part in the second shape is 4.

The fraction of the shaded part in the second shape

                                           =\frac{Number of shaded part}{Total part of the fraction}=\frac{4}{4}

The shaded part of the model =\frac{4}{4}+\frac{4}{4}

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Hence, the fraction represented by the shaded part of the model is \frac{2}{1}.

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3 years ago
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goldenfox [79]
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Step-by-step explanation:

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