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KIM [24]
3 years ago
14

4 times a number is 5 less than the square of that number

Mathematics
2 answers:
Tpy6a [65]3 years ago
4 0

Answer: The values were x = 5, and x = -1, with one positive root and one negative root. The negative solution of the two solutions is <u><em>-1.</em></u>

Alekssandra [29.7K]3 years ago
3 0

Answer:

4x=x²-5

Step-by-step explanation:

4 times a number=4x

square of that number=x²

is 5 less=-5

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faust18 [17]
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4 0
3 years ago
Find the inverse of the following function. Then prove they are inverses of one another.
solmaris [256]

Answer: \dfrac{x^2+1}{2}

Step-by-step explanation:

Given

f(x)=\sqrt{2x-1}

We can write it as

\Rightarrow y=\sqrt{2x-1}

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Replace y be x to get the inverse

\Rightarrow f^{-1}(x)=\dfrac{x^2+1}{2}

To prove, it is inverse of f(x). f(f^{-1}(x))=x

\Rightarrow f(f^{-1}(x))=\sqrt{2\times \dfrac{x^2+1}{2}-1}\\\\\Rightarrow f(f^{-1}(x))=\sqrt{x^2+1-1}\\\\\Rightarrow f(f^{-1}(x))=x

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8 0
3 years ago
What is the 1st quartile in the data set 65 90 100 72 88 55 73
dem82 [27]
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7 0
3 years ago
How do i simplify it? ​
Lemur [1.5K]

Answer:

6 3/4x

Step-by-step explanation:

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Then, you add the x and since there is no other variable like x, then you just leave it with 6 3/4.

Hope that helped! :)

3 0
2 years ago
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