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3 years ago

What is 0.2 with a repeating bar on to as a fraction

Mathematics

2 answers:

xxTIMURxx [149]3 years ago

8 0

As a fraction, 0.2 is 2/9

MA_775_DIABLO [31]3 years ago

6 0

The fraction would be 2/9

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3 years ago

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4 years ago

Solve equation, check for extraneous solutions

fiasKO [112]

Start with

$1=\dfrac{1}{n^2}+\dfrac{n^2-4n-5}{3n^2}$

We observe that both fractions are not defined if $n=0$ . So, we will assume $n \neq 0$ .

We multiply both numerator and denominator of the first fraction by 3 and we sum the two fractions:

$1=\dfrac{3}{3n^2}+\dfrac{n^2-4n-5}{3n^2} = \dfrac{n^2-4n-2}{3n^2}$

We multiply both sides by $3n^2$ :

$n^2-4n-2=3n^2$

We move everything to one side and solve the quadratic equation:

$2n^2+4n+2=0 \iff 2(n^2+2n+1)=0 \iff 2(n+1)^2=0 \iff n+1=0 \iff n=-1$

We check the solution:

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which is true

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3 years ago

What is the simplified version for these 4 ?

VladimirAG [237]

1. -3x + -6
2. -3x + 9
3. 2x - 6
4. -2x + 6

here u go

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3 years ago

Yeah so help please.

irina [24]

Answer:

could you possibly zoom in

Step-by-step explanation:

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3 years ago