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2 years ago

14 POINTS PLEASE HELP WILL MARK BRAINLIEST NEED URGENTLY

Mathematics

1 answer:

liraira [26]2 years ago

7 0

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:

The relation is negative, as -1 is a negative number.

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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PLEASE HELP ME!!!! I NEED THIS QUICKLY!!

zloy xaker [14]

Part A: $y=-\frac{5}{4} x+\frac{35}{2}$ is the equation of the line.

Part B: Anika worked 17.5 hours on day 0.

Part C: The setup time decreases with 1 hour and 15 min per day.

Explanation:

Part A: Let us find the equation of the line using the points (2,15) and (6,10)

The equation of the line is given by,

$y-y_{1}=\frac{y_{2}-y_{1}}{x_{2}-x_{1}} \cdot\left(x-x_{1}\right)$

Substituting, we get,

$y-15=\frac{10-15}{6-2} (x-2)$

Simplifying, we have,

$y-15=-\frac{5}{4} (x-2)$

$y-15=-\frac{5}{4} x+\frac{5}{2}$

Subtracting both sides by 15, we get,

$y=-\frac{5}{4} x+\frac{35}{2}$

Hence, the equation of the line is $y=-\frac{5}{4} x+\frac{35}{2}$

Part B: To determine the number of hours Anika worked on day 0, let us substitute x = 0 in the equation of the line.

Thus, we get,

$y=\frac{35}{2}\\y=17.5$

Hence, Anika worked 17.5 hours on day 0.

Part C: The setup time decrease per day can be determined using the slope.

The formula for slope is given by

$m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}$

Substituting , we have,

$m=\frac{10-15}{6-2}=-\frac{5}{4}$

Converting the fraction into hours and minutes, we get,

$-\frac{5}{4}\times60=-75 min$

Since, 1 hour = 60 min

Subtracting 60 and 75 = 15 min

Thus, the setup time decreases with 1 hour and 15 min per day.

6 0

3 years ago

(2h³j^-3 k⁴)/3jk<br>Just look at pic

Troyanec [42]

The answer is: 2•h^3•k^3 / 3•j^4

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2 years ago

Simplify (−4.5)(−6)(5.4).

Fynjy0 [20]

The answer to (-4.5)(-6)(5.4)= 137.7

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3 years ago

L.C.M. of 144,165 & 48 is

kifflom [539]

Answer:

48 = 2*2*2*2*3

165=3*5*11

144=2*2*2*2*3*3

Step-by-step explanation:

hope this helps

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2 years ago

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Trava [24]

Answer: 40%

Step-by-step explanation: 20 hours jogging/ 50 total hours gives you .4 which is 40%

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3 years ago

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