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4 years ago

If a polynomial has one root in the form a - √b, it has the second root on the form of a _√b?

Mathematics

1 answer:

Arada [10]4 years ago

6 0

"+" goes in the blank.

Polynomials with rational real coefficients have irrational or complex roots in conjugate pairs. A root with a positive irrational or imaginary part will be matched by a root with a negative irrational or imaginary part.

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3 years ago

Mrs. Taft keeps inventory of the copy paper in the school copier room. Nine weeks ago, there were 150 reams of copy paper in the

Novay_Z [31]

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-9/65

Step-by-step explanation:

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3 years ago

Given a bag of 60 Skittles with 30 green, 12 yellow, and 18 red Skittles, how many are red or green ?

vladimir1956 [14]

Answer:

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3 years ago

Find the equation of a line that passes through the points (-2, -1) and (0, -5)

Klio2033 [76]

Answer:

Step-by-step explanation:

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3 years ago

Read 2 more answers

What conclusion can be determined from the dot plot below? A. The median of the data set is 3. B. The mean of the data set is 3.

RSB [31]

Given:

Consider the below figure attached with this question.

To find:

The conclusion that can be determined from the dot plot.

Solution:

The number of dots in the dot plot is 15. So, the number of observations is 15 and option D is correct.

The data set represented by the dot plot is:

2, 2, 3, 3, 3, 4, 4, 4, 4, 4, 5, 5, 5, 6, 6

Number of observations is 15, which is an odd number. So, the median of the data set is:

$Median=\dfrac{15+1}{2}\text{th term}$

$Median=\dfrac{16}{2}\text{th term}$

$Median=8\text{th term}$

$Median=4$

The median of the data set is 4. So, option A is incorrect.

Mean of the data set is:

$Mean=\dfrac{\text{Sum of all observations}}{\text{Number of observations}}$

$Mean=\dfrac{2+2+3+3+3+4+4+4+4+4+5+5+5+6+6}{15}$

$Mean=\dfrac{60}{15}$

$Mean=4$

The mean of the data set is 4. So, option B is incorrect.

The range of the data set is:

$Range = Maximum - Minimum$

$Range = 6-2$

$Range = 4$

The range of the data set is 4. So, option C is incorrect.

Therefore, the correct option is D.

3 0

3 years ago