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Tomtit [17]
3 years ago
12

Can you help to solve this and explain how thanks in advance

Mathematics
2 answers:
gtnhenbr [62]3 years ago
6 0

Hey there! :)

Answer:

5.

Step-by-step explanation:

The pattern of this puzzle is to take the bottom two numbers of the triangle, find the sum, then divide by the top number. For example:

8 + 4 = 12 --> 12/3 = 4.

5 + 13 = 18 --> 18/6 = 3.

9 + 5 = 14 --> 14/2 = 7.

Therefore:

14 + 6 = 20 --> 20/4 = 5. The missing number is 5.

Nat2105 [25]3 years ago
4 0

Answer: 5

Step-by-step explanation:

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Answer:

f(x)=\frac{x}{x+20} , g(x)=\frac{20x}{x-1}

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we know that

To find the inverse of a function, exchange variables x for y and y for x. Then clear the y-variable to get the inverse function.

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<u>case A)</u> f(x)=\frac{x+1}{6} , g(x)=6x-1

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Exchange variables x for y and y for x

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<u>case B)</u> f(x)=\frac{x-4}{19} , g(x)=19x+4

Find the inverse of f(x)

Let

y=f(x)

Exchange variables x for y and y for x

x=\frac{y-4}{19}

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<u>case C)</u> f(x)=x^{5}, g(x)=\sqrt[5]{x}

Find the inverse of f(x)

Let

y=f(x)

Exchange variables x for y and y for x

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fifth root both members

y=\sqrt[5]{x}

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f^{-1}(x)=\sqrt[5]{x}

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f(x) and g(x) are inverse functions

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f^{-1}(x)=y

f^{-1}(x)=20x/(1-x)

\frac{20x}{1-x}\neq \frac{20x}{x-1}

therefore

f(x) and g(x) is not a pair of inverse functions

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