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I am Lyosha [343]
3 years ago
5

which of the following shows the polynomial below written in decreasing order 5x^3-x+9x^7+4+3x^11 HELLLPPPPPPPPPPPPP a.3x^11+9x^

7+4+3x^11 b.4+3x^11+9x^7+5x^3-x c.3x^11+9x^7-x+4+5x^3 d.9x^7+5x^3+4+3x^11-x
Mathematics
1 answer:
ValentinkaMS [17]3 years ago
7 0

Answer:

3x^11+9x^7+5x^3-x+4

Step-by-step explanation:

A polynomial written in decreasing order is a polynomial that starts with terms with the highest degree and ends with terms to the lowest degree.

First find the decreasing order of the answer:

5x^3-x+9x^7+4+3x^11

3x^11+9x^7+5x^3-x+4

The answer should be this, but I couldn't find a match for it in the answer box.

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Mr. Acosta, a sociologist, is doing a study to see if there is a relationship between the age of a young adult (18 to 35 years o
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Answer:

There is a relationship between the age of a young adult and the type of movie preferred.

Step-by-step explanation:

In this case we need to test whether there is a significance relationship between the age of a young adult and the type of movie preferred.

The hypothesis can be defined as:

<em>H₀</em>: Age of a young adult and movie preference are independent.

<em>Hₐ</em>: Age of a young adult and movie preference are not independent.

The test statistic is given as follows:

\chi^{2}=\sum\limits^{n}_{i=1}{\frac{(O_{i}-E_{i})^{2}}{E_{i}}}

Consider the table below.

The formula to compute the expected frequencies is:

E_{i}=\frac{\text{Row Total}\times \text{Column Total}}{\text{Total}}

The Chi-square test statistic value is:

\chi^{2}=\sum\limits^{n}_{i=1}{\frac{(O_{i}-E_{i})^{2}}{E_{i}}}=2.6013

The significance level of the test is, <em>α</em> = 0.05.

The degrees of freedom of the test is,

df = (r - 1)(c - 1)

   = (3 - 1)(3 - 1)

   = 2 × 2

   = 4

Compute the <em>p</em>-value as follows:

<em>p</em>-value = 0.6266

*Use a Chi square table.

As the <em>p-</em>value is more than the significance level the null hypothesis was failed to be rejected.

Thus, concluding that there is a relationship between the age of a young adult (18 to 35 years old) and the type of movie preferred.

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