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3 years ago

Find the value of y A)6/3 B)6 C)2/3 D)4

Mathematics

1 answer:

Inessa [10]3 years ago

6 0

Answer:

y = A ( $6\sqrt{3}$ )

Step-by-step explanation:

$x^{2} +y^{2} = 12^{2}=144\\y^{2}-9^{2}=x^{2} -3^{2} \\x^{2} -y^{2}=-72\\2y^{2}=216\\y^{2}=108\\ y=\sqrt{108}=6\sqrt{3}$

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What does it mean to say that two variables are positively associated?

stealth61 [152]

Answer:

Option A is correct.

Step-by-step explanation:

Correlation coefficients tell us how strongly the two variables are associated.

A positive correlation is a relation when both the variables move together in the same direction. Like if value of first increases the other also increases.

When the correlation coefficient is greater than 0, this means that both variables are correlated.

So, the answer here will be :

A. There is a linear relationship between the variables, and whenever the value of one variable increases, the value of the other variable increases.

3 0

3 years ago

If a line contains the point (0, -1) and has a slope of 2, then which of the following points also lies on the line?

lana66690 [7]

Answer:

(1,1)

Step-by-step explanation:

3 0

3 years ago

Sixty-eight percent of adults in a certain country believe that life on other planets is plausible. You randomly select five adu

Pavlova-9 [17]

Answer:

Mean = 3.4

Variance = 1.088

Standard deviation = 1.0431

Step-by-step explanation:

$P=0.68\\ \\N=5$

The mean of a binomial distribution with parameters N (the number of trials) and p (the probability of success for each trial) is $m=N\cdot p$

Thus,

$m=5\cdot 0.68=3.4$

The variance of the binomial distribution is $s^2=Np(1-p)$ , where $s^2$ is the variance of the binomial distribution, so

$s^2=5\cdot 0.68\cdot (1-0.68)=3.4\cdot 0.32=1.088$

The standard deviation $s$ is the square root of the variance $s^2,$ so

$s=\sqrt{1.088}\approx 1.0431$

3 0

3 years ago

PLZ HELP!!!!!!!!!!!!

Nezavi [6.7K]

Answer:

1. 0.5

2. 0.25

3. 0.33333...

4. 0.2

5. 0.75

6. 0.666...

7. 0.4

8. 0.375

9. 0.444...

10. 0.28571428571429

Step-by-step explanation:

6 0

3 years ago

CAN SOMEONE PLEASE HELP ME WITH THIS PROBLEM PLEASE????????????????????????

icang [17]

Answer:

For 1 there is causationand there is correlation because they found that if people have a higher income, they will buy a more expensive plan so one cause another

the second question, there is no correlation because it doesn’t matter how many samples they provide, people still buy the same amount

4 0

3 years ago