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densk [106]
3 years ago
7

Which domain restrictions apply to the rational expression?

Mathematics
1 answer:
andre [41]3 years ago
4 0

Both expression have the same denominator: 9x²-1. Thus it must not be 0.

9x²-1=(3x-1)(3x+1)=0, resulting x=+-1/3.

Restrictions: x in R\{-1/3, 1/3}

Adding those expressions:

E=(-x-2)/(9x²-1 ) + (-5x+4)/(9x²-1)=

(-x-2-5x+4)/(9x²-1)=(-6x+2)/(9x²-1)=

(-2)(3x-1)/(9x²-1)=-2/(3x+1)

E=-2/(3x+1)

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Step-by-step explanation:

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Does anyone know #11
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3 years ago
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Answer:

Step-by-step explanation:

Subtract 2x

from both sides of the equation.

y=8−2x

x−y=2

Replace all occurrences of y

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y=8−2x

x−(8−2x)=2

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Tap for more steps...

y=8−2x

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Solve for x

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y=8−2x

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Replace all occurrences of x

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y=8−2(103)

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y=43

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The solution to the system of equations can be represented as a point.

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3 0
3 years ago
What is 0.11/5.973 please show work
german

Answer:

  0.0184162062615101289...

Step-by-step explanation:

In the attachment, the quotient is calculated "by hand" to 7 decimal places (6 significant figures). The quotient is a repeating decimal with a 180-digit repeat.

This is a good problem for your calculator.

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8 0
2 years ago
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