4 years ago

Write 12.9 + 8 using words.

Mathematics

1 answer:

Anna35 [415]4 years ago

7 0

Twelve point nine plus eight equals twenty point nine (12.9 + 8 = 20.9)
Hope this helped :)

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For f (x) = 4 x +1 and g(x) = x^2- 5, find (g/f)(x)

Lady bird [3.3K]

Answer:

The answer is: $\frac{x^2-5}{4x+1}$

Step-by-step explanation:

We are given: $f(x)=4x+1$ and $g(x) = x^2-5$

We need to find $(g/f)(x)$ .

Simply divide $g(x)$ and $f(x)\\$ .

Which equates to:

$(g/f)(x)= \frac{g(x)}{f(x)} =\frac{x^2-5}{4x+1}$

This cannot be simplified further, so it is the answer.

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tankabanditka [31]

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3 years ago

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Their is no possible solution because you can’t get .4 of a book

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3 years ago

Correct the errors and fill in the blanks by completing the square.

zmey [24]

Answer:

x = 2 - 5 $\sqrt{3}$ , x = 2 + 5 $\sqrt{3}$

Step-by-step explanation:

x² - 4x = 71

to complete the square

add ( half the coefficient of the x- term )² to both sides

x² + 2(- 2)x + 4 = 71 + 4

(x - 2)² = 75 ( take the square root of both sides )

x - 2 = ± $\sqrt{75}$ = ± 5 $\sqrt{3}$ ( add 2 to both sides )

x = 2 ± 5 $\sqrt{3}$

then

x = 2 - 5 $\sqrt{3}$ , x = 2 + 5 $\sqrt{3}$

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I believe 4 sorry if I'm wrong

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