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2 years ago

Need help asap pleas and thank you .

Mathematics

1 answer:

Arisa [49]2 years ago

4 0

Answer:

The answer that is not true when x = -4 is B.

Step-by-step explanation:

Since x = -4, that means all we have to do to eliminate answers is plug -4 in place of x.

A is incorrect because 2 × -4 = -8, which means that answer IS true and we're looking for the one that isn't true.

Same with C, -4 + -4 + -4 added together gives you -12 = -12, therefore isn't the right choice.

Finally D. -4/4 divided equals -1, so that would make it -1 = -1.

B is the only one that doesn't make sense, therefore you have your answer.

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H(x)= 9/x( x^2-49) Determine the domain of the function

Norma-Jean [14]

Answer: The domain of the function $h(x) = \frac{9}{x(x^2-49)}$ is:

Interval Notation: (-∞ , -7) ∪ (-7 , 0) ∪ (0 , 7) ∪ (7, ∞)

Set-Builder Notation: { x | x ≠ 0 , 7 , -7 }

All real numbers besides 0, 7, and -7.

Step-by-step explanation:

In order to find the domain of your rational function, we need to simplify it:

$h(x) = \frac{9}{x(x^2-49)} = \frac{9}{(x)(x+7)(x-7)}$

Remember, most of the time, the domain of a rational function consists of all real numbers besides zero.

To find the domain, we equal the equations in the denominator to zero.

$x=0$

$x+7=0$ --> $x=-7$

$x-7=0$ --> $x=7$

So all real numbers except for 0, -7, and 7 are in the domain of this rational function.

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2 years ago

How do you write the fraction of 6/6 as a sum of fractions in three different ways

zhenek [66]

Answer:

3/6 + 3/6 | 4/12 + 8/12 | 2.5/6 +3.5/6

Step-by-step explanation:

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2 years ago

Write a real-world problem that gives extra information. Tell what the extra information is.

yawa3891 [41]

1.That there is still slavery in the word. CNN 10 reporters caught on film a slave trade in Africa

2. Extra information is adding more information in your sentence to make it seem more interesting

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2 years ago

2 1/2 divided by 1 7/8 SHOW YOUR WORK and if you do i'll give you brainiest :)

Murljashka [212]

Answer:

1.33

Step-by-step explanation:

2 1/2=2.5

1 7/8=1.87

=1.33

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2 years ago

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mixas84 [53]

Answer:

Thats not a full question

Step-by-step explanation:

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2 years ago