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3 years ago

Arrange the graphs in descending order (from highest to lowest) based on the values of their correlation coefficients.

Mathematics

2 answers:

Scrat [10]3 years ago

6 0

Basically, the closer they fit to the imaginary line of best fit, the higher they are

the closer the dots are to the imaginary line, te higher the number

D looks the closest together so that is first
A is a little farther apart
C is farther
B is farthers

DACB is order

son4ous [18]3 years ago

3 0

Answer:

D,A,C,B

Step-by-step explanation:

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Add or subtract as indicated 5/x-2 - 3/x-2

algol [13]

Option a: $\frac{2}{x-2}$ is the right answer

Step-by-step explanation:

The given expression is:

$\frac{5}{x-2} - \frac{3}{x-2}$

As the denominators of both terms are same, the LCM will be x-2

$\frac{5-3}{x-2}$

Subtracting

$\frac{2}{x-2}$

Hence,

Option a: $\frac{2}{x-2}$ is the right answer

Keywords: Polynomials, fractions

Learn more about polynomials at:

#LearnwithBrainly

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3 years ago

Explain what the following statement means: Polynomials are closed under the operations of addition and subtraction. Provide one

kirza4 [7]

1. Polynomials are closed under the operations of addition and substraction mean that:

If we add two polynomials, the result is still a polynomial (so still in the set of polynomials)

Also, If we subtract 2 polynomials, the result is a polynomial.

2. Example: given the polynomials :

$M(x)= 3x^{2}+5x-1$ and $N(x)=-6 x^{4}+9 x^{3}+ x^{2} -2x-1$

Addition example:

$M(x)+N(x)=(3x^{2}+5x-1)+(-6 x^{4}+9 x^{3}+ x^{2} -2x-1)=$

$-6 x^{4}+9 x^{3}+x^{2} +3x^{2}-2x+5x-1-1=-6 x^{4}+9 x^{3}+4x^{2}x-2$

Subtraction example:

$N(x)-M(x)=(-6 x^{4}+9 x^{3}+ x^{2} -2x-1)-(3x^{2}+5x-1)$

= $-6 x^{4}+9 x^{3}+ x^{2} -2x-1-3x^{2}-5x+1=$
= $-6 x^{4}+9 x^{3}+ x^{2} -3x^{2}-2x-5x-1+1=-6 x^{4}+9 x^{3}-2x^{2}-x$

So both M(x)+N(x) and N(x)-M(x) are polynomials

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