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elena-s [515]
3 years ago
12

Which statement describes the domain of the function

Mathematics
2 answers:
Nookie1986 [14]3 years ago
6 0

Answer:

D: All real numbers except x=-1 and x=1

Step-by-step explanation:

juin [17]3 years ago
6 0

Step-by-step explanation:

The domain of the rational expression is when the denominator is defined. (non-zero)

When the denominator is 0,

4x² - 4 = 0.

=> x² - 1 = 0, (x + 1)(x - 1) = 0, x = -1 or x = 1.

Hence the answer is all real numbers except x = -1 and x = 1.

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Factor this polynomial completely x2 + 3x – 18 A. (x-2)(x + 9) B. (x+3)(x-6) оо C. (x - 3)(x+6) D. (x - 3)(x-6)​
Umnica [9.8K]

Answer:

C. (x-3)(x+6)

Step-by-step explanation:

I think the equation meant x^2+3x-18?

Anyways, to factor these kinds of quadratic, keep into consideration:

ax^2+bx+c=(x+w)(x+v)

ONLY if:

w+v=b\\wv=c

Start off by finding factors of c, which in this case, -18:

±(1, 2, 3, 6, 9, 18)

If one of the numbers is negative then the other number must be positive.

Find which two factors will sum up to b, which in this case, is 3.

1+(-18)\neq 3\\2+(-9)\neq 3\\3+(-6)\neq 3\\6+(-3)=3\\9+(-2)\neq 3\\18+(-1)\neq 3\\

The only two factors that work are 6 and -3.

Replace them into the factored form:

(x+w)(x+v)\\(x+6)(x-3)\\(x-3)(x+6)

3 0
2 years ago
Read 2 more answers
What is the volume of a cylinder with a diameter of 12 in. and a height of 7 in.?
Stels [109]

Answer

Find out the  volume of a cylinder .

To prove

Formula

Volume\ of\ cylinder = \pi r^{2}h

Where r is the radius and h is the height.

As given

Diameter of 12 in. and a height of 7 in.

Radius = \frac{Diameter}{2}

Radius = \frac{12}{2}

Radius = 6 in

\pi = 3.14

put all the values in the formula

Volume\ of\ cylinder = 3.14\times 6\times 6\times 7

                                          = 791.28 in³

Therefore the volume of the cylinder is 791 .28 in³ .

3 0
3 years ago
Scenario for 300=60t
earnstyle [38]
Do you need to find what t is? If so, do 300 divided by 60 to get the t isolated. which is, 5.

you can check by doing 60*5 which is 300
4 0
3 years ago
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(1/3) to the power of 4
aalyn [17]

Answer:

1/84

Step-by-step explanation:

This was a very complicated problem but the only way that I could solve this was by using a calculator.

7 0
3 years ago
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Two random samples were taken to determine how often people in a community listen to the local radio station each month.
Gennadij [26K]

Answer:

It is a random sample

The second sample is more representative of a population

The second sample gives better representation because it is larger

Step-by-step explanation:

According to the given statement we have been given two statements and we have to determine  how often people in a community listen to the local radio station each month.

If you notice the second sample it is a random sample because people who visited the store had equal probability of being chosen.

The second sample is more representative of a population because it is a larger sample than the first sample and the sample are taken from the only local grocery store.

The second sample gives better representation because it is larger ...

4 0
3 years ago
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