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3 years ago

Proper subset of {2,4,6}

Mathematics

2 answers:

Basile [38]3 years ago

5 0

Answer:

(2 ; 4)

(2 ; 6)

(4 ; 6)

( 2 )

( 4 )

( 6 )

( )

tankabanditka [31]3 years ago

4 0

Answer:

(2,4)

(2,6)

(4,6)

(2)

(4)

(6)

()

Step-by-step explanation:

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liraira [26]

Using correlation coefficients, it is found that a coefficient of -1 represents a strong negative correlation.

<h3>What is a correlation coefficient?</h3>

It is an index that measures correlation between two variables, assuming values between -1 and 1.

If it is positive, the relation is positive, that is, they are direct proportional. If it is negative, they are inverse proportional.

If the absolute value of the correlation coefficient is greater than 0.6, the relationship is strong.

For this problem, we have a correlation coefficient of -1, hence it means that:

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The relation is strong, as the absolute value of the coefficient is of 1, which is greater than 0.6.

More can be learned about correlation coefficients at brainly.com/question/25815006

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1 year ago

Precalc.

viktelen [127]

Domain: x>0.

$(\log_2x)^2+7\log_2x+12=0$

Substitute $t=\log_2x\in\mathbb{R}$ . We have:

$t^2+7t+12=0\\\\a=1\qquad b=7\qquad c=12\\\\\\\Delta=b^2-4ac=7^2-4\cdot1\cdot12=49-48=1\\\\\sqrt{\Delta}=\sqrt{1}=1\\\\\\
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For t₁ there will be:

$\log_2x=t_1\\\\\log_2x=-4\\\\2^{-4}=x\\\\x=\dfrac{1}{2^4}\\\\\\x=\dfrac{1}{16}=0,0625\\\\\\\boxed{x\approx0,063}$

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$\log_2x=t_2\\\\\log_2x=-3\\\\2^{-3}=x\\\\x=\dfrac{1}{2^3}\\\\\\x=\dfrac{1}{8}\\\\\\\boxed{x=0,125}$

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3 years ago

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s2008m [1.1K]

Answer:

Step-by-step explanation:

3y + 1 - 2y = -3 -3y

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