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Jet001 [13]
3 years ago
6

A line of best fit can only be established for data with positive correlation. true or false

Mathematics
2 answers:
Vanyuwa [196]3 years ago
8 0
I think it would be true
ipn [44]3 years ago
5 0
Answer is true ! Good luck
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Find a polynomial function of least degree having only real coefficients, a leading coefficient of 1, and roots of 2-√6 , 2+ √6
horsena [70]

Answer:

x^{4} -18x^{3}+104x^{2} -172x-100

Step-by-step explanation:

The 3 roots are given out of which 2 are real and 1 is imaginary. For a polynomial of least degree having real coefficients, it must have a complex conjugate root as the 4th root. Therefore, based on 4 roots, the least degree of polynomial will be 4. Finding the polynomial having leading coefficient=1 and solving it based on multiplication of 2 quadratic polynomials, we get:  

\\\\x_{1} = 2-\sqrt{6} \\x_{2} = 2+\sqrt{6} \\x_{3}=7-i \\x_{4}=7+i \\\\P(x)=1(x-x_{1})(x-x_{2} )(x-x_{3} )(x-x_{4} ) \\\\=(x-(2-\sqrt{6}))(  x-(2+\sqrt{6} )) (x-(7-i))( x-(7+i))\\=((x-2)+\sqrt{6})( ( x-2)-\sqrt{6} ) ((x-7)+i)( (x-7)-i)\\=((x-2)^{2} -(\sqrt{6} )^{2} )((x-7)^{2}-(i)^{2})\\=(x^{2} -4x-2)(x^{2} -14x+50)\\=x^{4} -18x^{3}+104x^{2} -172x-100\\

7 0
2 years ago
(x/2)+3=(3/4) I don't understand can someone help?
arlik [135]

Answer:

What are you trying to find?

Step-by-step explanation:

4 0
3 years ago
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Which transformation shows a reflection across the y-axis?
LUCKY_DIMON [66]
The correct answer is letter A
3 0
3 years ago
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The sixth grade class has 18 boys and 24 girls. The teacher wants to divide them into groups that have the same number of boys a
Doss [256]

Answer:

The teacher can make 7 groups of 6 students

Step-by-step explanation:

24+18= 42. The biggest number you can use to divide and get a real number is 7.

6 0
3 years ago
Anwser asap 50 points
Bad White [126]

Answer:

[1, 5]

Step-by-step explanation:

Here I see ONE row and FIVE columns, so the dimensions are [1, 5].

5 0
3 years ago
Read 2 more answers
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