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3 years ago

Which of the following shows no correlation between the independent and dependent variables?

Mathematics

2 answers:

GarryVolchara [31]3 years ago

4 0

For the scatter plot, if the scatter is too high and we are not able to draw the line of best fit, we say the plot doesn't show any correlation.

In A the scatter plot is rising and it is saturated on a rising line, so it is a positive correlation.

In B, we can draw a line fitting all the dots. Also it is rising. Hence it is a strong positive correlation.

In C, the scatter plot is coming down and we can still draw a line of best fit. So this is a negative correlation.

But in D, the scatter is in a huge area and we cannot draw a line around which it can be saturated.

Hence D shows no correlation.

jeka943 years ago

3 0

D doesn’t show a positive or negative correlation. D is the best answer choice.

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If we were to do this equation how would I solve it

s344n2d4d5 [400]

Answer:

$- 6 \frac{1}{3}$

Step-by-step explanation:

$\frac{10}{3} - \frac{1}{3} - \frac{29}{3} - ( - \frac{1}{3} ) \\ \\ = \frac{10}{3} - \frac{1}{3} - \frac{29}{3} + \frac{1}{3} \\ \\ = \frac{10}{3} - \frac{29}{3} - \frac{1}{3} + \frac{1}{3} \\ \\ = \frac{10 - 29}{3} \\ \\ = \frac{ - 19}{3} \\ \\ = - 6 \frac{1}{3}$

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4 years ago

What two numbers multiply to -52 and add up to 24

harkovskaia [24]

Answer:

-2 and 26

Step-by-step explanation:

Multiply to -52:

-2 * 26= -52

Add to 24

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8 0

3 years ago

Read 2 more answers

Find the standard form of the equation of the parabola with a focus at (0, 8) and a directrix at y = -8

Gekata [30.6K]

First, let $(x,y)$ be a point in our parabola. Since we know that the focus of our parabola is the point (0,8), we are going to use the distance formula to find the distance between the two points:
$\sqrt{(x-0)^{2}+(y-8)^{2}}$

Next, we are going to find the distance between the directrix and the point in our parabola. Remember that the distance between a point (x,y) of a parabola and its directrix, $y=c$ , is: $|y-c|$ . Since our directrix is y=-8, the distance to our point will be:
$|y-(-8)|$
$|y+8|$

Now, we are going to equate those two distances, and square them to get rid of the square root and the absolute value:
$\sqrt{(x-0)^{2}+(y-8)^{2}}=|y+8|$
$(\sqrt{(x-0)^{2}+(y-8)^{2}})^{2}=|y+8|^{2}$
$(x-0)^{2}+(y-8)^{2}=y+8$

Finally, we can expand and solve for $y$ :
$x^2+y^2-16y+64=y^2+16y+64$
$x^{2}-16y=16y$
$32y=x^{2}$
$y= \frac{1}{32} x^2$

We can conclude that t<span>he standard form of the equation of the parabola with a focus at (0, 8) and a directrix at y = -8 is </span> $y= \frac{1}{32} x^{2}$

3 0

3 years ago

The height of the cylinder is 25 inches and the radius of its base is 5 inches. What is the surface area of this cylinder, in te

Vikentia [17]

ok you need formula for surface area.

SA = πrh+2πr^2

Plug in 25 and 5

SA = 2π(5)(25)+2π(5)^2

SA = 10pi*25 + 2pi(25)

SA = 250pi + 50pi

SA = 300pi

Hope this helps :)

Jeron

4 0

2 years ago

I will give you a Brainliest

dlinn [17]

Answer: 4.2 units is equal to 26.376 circumference, 7.4 units is equal to 23.236, 11 units is equal to 34.54 and finally 9.5 units is equal to 59.66

Step-by-step explanation:

7 0

3 years ago