Help plz:)))I’ll mark u Brainliest

Answer:

The answer is -0.828

Step-by-step explanation:

I took the quiz and i gt this question correct, hope it helps!

The r-value of the given data is 0.374.

The correlation coefficient, denoted as r, is a statistical measure that describes the strength and direction of the linear relationship between two variables.

It ranges between -1 and +1, where -1 indicates a perfect negative correlation (inverse relationship), +1 indicates a perfect positive correlation (direct relationship), and 0 indicates no correlation between the variables.

We have,

First, we need to find the correlation coefficient (r) of the given data.

We can use the following formula to do this:

r = [n∑(xy) - (∑x)(∑y)] / [√{n∑x² - (∑x)²} √{n∑y² - (∑y)²}]

where n is the number of data points, x, and y are the respective variables, and ∑ denotes the sum of the values.

Using the given data, we can calculate the values as follows:

n = 5

∑x = 39

∑y = 53

∑(xy) = 442

∑x^2 = 483

∑y^2 = 1249

Substituting these values into the formula, we get:

r = [5(442) - (39)(53)] / [√{5(483) - (39)^2} √{5(1249) - (53)²}]

r = [2210 - 2067] / [√(2415) √(5660)]

r = 143 / (61.898 75.245)

r = 0.374 (rounded to three decimal places)

Therefore,

The r-value of the given data is 0.374.

Learn more about correlation coefficient here:

#SPJ7

Answer:

(2, -1)

Step-by-step explanation:

because that's where the lines intersect

Answer:

Answer B

Step-by-step explanation:

Answer:

$1.00

Step-by-step explanation:

The sales price of the items sold by the 6 friends given the total amount made is $1.40.

In order to determine the sales price, divide the total amount made by the total amount of the items sold

Sales price = $25.20 / (6 x 3) = $1.40

To learn more about division, please check: https://brainly.com/question/13281206

Answer:

itd be the last one

Step-by-step explanation:

because of the process lol

Answer:

He can watch 14 first run movies to keep his monthly bill to be a maximum of $ 100.

Step-by-step explanation:

Given that Harry’s TV plan cost $ 49.99 per month plus $ 3.49 per first run movie, to determine how many first run movies can he watch if he wants to keep his monthly bill to be a maximum of $ 100, the following calculation must be performed:

100 - 49.99 = 50.01

50.01 / 3.49 = X

14.32 = X

49.99 + (3.49 x 14) = 98.85

Thus, he can watch 14 first run movies to keep his monthly bill to be a maximum of $ 100.

Answer:

• 25%

• Drama movie

Step-by-step explanation:

• Total number of children

= 16 +12 +18 +20 +14

= 80

Percentage of children that voted for action movie

[tex] = \frac{no. \: of \: children \: that \: voted \: for \: action \: movie}{total \: number \: of \: children} \times 100\%[/tex]

[tex] = \frac{20}{80} \times 100\%[/tex]

[tex] =\textbf{25\%}[/tex]

------------------------------------------------------------

• Total number of votes

= 30 +32 +36 +36 +26

= 160

20% of total votes

= 20% ×160

= 32 votes

Since Drama movie received 32 votes, it received 20% of the total votes.

Answer:

25π

Step-by-step explanation:

pi's symbol is π, which will be used sometimes to make it easier later

The circumference is equal to diameter multiplied by pi. (Diameter is the length across the circle, radius the center of the circle to an edge point aka. half the diameter, and circumference is the edge length aka. perimeter of the circle.)

We can then remove the pi off the 10, as the diameter multiplied by pi is the circumference, so the diameter is 10.

Half of 10 is 5, the radius.

The formula for area of a circle is radius squared times pi, remember easily by π r ^2

We can plug in the radius into the formula to get

π 5 ^2

And finish it by solving the square root to get

π 25

25π

9514 1404 393

Answer:

  14.40 m

Step-by-step explanation:

A typical suburban home site in the US might have a width between 15 and 50 meters. So, the front of Bill's house is most likely to be about 14.4 m, of the choices offered.

Answer:

$47

Step-by-step explanation:

Given data

Cost= $50

Tax= 4%

Tip= 10%

Let us find the amount of the Tax

=4/100*50

=0.04*50

=$2

Let us find the amount of the Tip

=10/100*50

=0.1*50

=$5

Hence the total amount is

=50+2-5

=52-5

=$47

Answer:

there isnt a question... what do you need help with?

Answer:

.-. >_>

Step-by-step explanation:

Answer:

Green = 13.5 ft²

Blue = 42 in²

Step-by-step explanation:

Green: 6+3=9

9÷2=4.5

4.5x3=13.5

Blue: 8+13=21

21÷ 2=10.5

10.5x4=42

Answer:

D] 5.4 units

Step-by-step explanation:

explanation is in the picture.

Answer:

80°

Step-by-step explanation:

In rhombus, opposite angles are equal. i.e <KET = <KIT

Triangle KET is isoceles, which means both parts of angle E are equal.

Angle E = 40 + 40

Angle E = 80

If angle E is 80 than Angle I is also 80.

Answer:

90-35=55

x=55

Step-by-step explanation:

Answer:

x = 55

Step-by-step explanation:

x and 35 must = 90 degrees because of the Angle Addition Postulate. So if you subtract 90 and 35, you get x.

Answer: 4.5

Step-by-step explanation:

[tex]5(2x+1)=50\\\\2x+1=10\\\\2x+9\\\\x=\boxed{4.5}[/tex]

Answer:

11.7

Step-by-step explanation:

First HK can be found via Pythagorean Theorem

6^2 + 10^2 = 36 + 100 = 136

The square root of 136 is (rounded to the nearest tenth): 11.7

GJ is congruent to HK

GJ = 11.7

The number of stakes that you need to be required should be 400 stakes.

Since You want to put a stake every metre around the perimeter of a square plot that measures 100 metres on every side.

So here the square does have 4 sides

So,

= 100 (4)

= 400

hence, The number of stakes that you need to be required should be 400 stakes.

Learn more about perimeter here: https://brainly.com/question/24891826

Answer:

Surface area = 24 in.²

Step-by-step explanation:

Surface area of the cube = 6a²

Where,

a = length of the each side of the cube = 2 in.

Plug in the value into the formula

Surface area of the cube = 6(2²)

= 6 × 4

Surface area = 24 in.²

Answer:

2y = 7

y = 3 1/2

Step-by-step explanation:

I hope this helps you answer your question.

Answer:

can you plz picture the graph so my answer you correctly .

Answer:

6.25 feet squared of fabric needed

Step-by-step explanation:

4:5 placemats:fabric

then

5:6.25

Answer:

480 push ups

Step-by-step explanation:

24/6 = 4

meaning they are doing 4 push ups per second, this is your slope

the equation of your line is y = 4x, you can graph this using a table of values (i attached a graph tho)

2 minutes = 120s

y = 4(120)

y = 480

Answer:

here

Step-by-step explanation:

Solving a quadratic equation, it is found that your opponent has 5.08 seconds to react before the ball hits the ground on the other side of the net.

It is given by:

[tex]h(t) = -5t^2 + v_0t + h_0[/tex]

In which:

You hit a tennis ball with an initial vertical velocity of 25 m/s. The ball leaves the tennis racket 2 meters above the ground, hence [tex]v_0 = 25, h_0 = 2[/tex].

Then, the equation is:

[tex]h(t) = -5t^2 + 25t + 2[/tex]

It hits the ground when h(t) = 0, hence:

[tex]-5t^2 + 25t + 2 = 0[/tex]

The solutions are h = 5.08 and h = -0.08.

Since time is a positive measure, your opponent has 5.08 seconds to react before the ball hits the ground on the other side of the net.

More can be learned about quadratic equations at https://brainly.com/question/24737967

Answer:

The test value is z = -1.31.

Step-by-step explanation:

The Eagle Ridge Contractors Association claims the average price of a home in their subdivision is $125,150.

This means that the null hypothesis is that the mean is this value, that is:

[tex]H_0: \mu = 125150[/tex]

The Eagle Ridge Home Owners Association is interested in knowing if the costs of homes for sale in this subdivision are actually lower than claimed.

This means that at the alternate hypotehsis we test that the mean is lower than that value, that is:

[tex]H_a: \mu < 125150[/tex]

The test statistic is:

[tex]z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}[/tex]

In which X is the sample mean, [tex]\mu[/tex] is the value tested at the null hypothesis, [tex]\sigma[/tex] is the standard deviation and n is the size of the sample.

125150 is tested at the null hypothesis:

This means that [tex]\mu = 125150[/tex]

Standard deviation of $7,350.

This means that [tex]\sigma = 7350[/tex]

A sample of 36 homes for sale in this subdivision had an average selling price of $123,550.

This means that [tex]n = 36, X = 123550[/tex]

Compute the test value.

[tex]z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}[/tex]

[tex]z = \frac{123550 - 125150}{\frac{7350}{\sqrt{36}}}[/tex]

[tex]z = -1.31[/tex]

The test value is z = -1.31.

Answer and Step-by-step explanation:

The answer is 5 units.

This is because the slope of that line is 2.5, and diagonal 2.5 units twice.

#teamtrees #PAW (Plant And Water)

rectangle for sure my teacher told me

Answer:

[tex]x = 75[/tex]

Step-by-step explanation:

Given

See attachment

Required

The value of x that makes l and m parallel

Let the angles be ABC (See attachment 2)

[tex]\angle CAB[/tex] is corresponding to 50 degrees. So:

[tex]\angle CAB=50[/tex]

[tex]\angle ABC[/tex] is corresponding to 55 degrees. So:

[tex]\angle ABC = 55[/tex]

This means that:

[tex]\angle ABC + \angle CAB + x = 180[/tex]

[tex]50 +55 + x = 180[/tex]

Solve for x

[tex]x = 180 - 50 - 55[/tex]

[tex]x = 75[/tex]