[x = 4y+7
|2x - 6y = 12

What are x and y

the correlation coefficient for Alfonso survey is 0.36.

The correlation coefficient is a quantitative method of calculating correlation. It is a statistical concept, which helps in establishing a relation between predicted and actual values obtained in a statistical experiment.

For the given situation,

The table below shows the values of the data x, y and the correlation calculations.

The formula of correlation coefficient is

[tex]r=\frac{n(\Σ xy)-(\Σ x)(\Σ y)}{\sqrt{[n\Σ x^{2} -(\Σ x)^{2} }] [n\Σ y^{2}-(\Σ y)^{2} ]}[/tex]

From the table substitute all the values.

⇒ [tex]r=\frac{(11)(98-(37)(26))}{\sqrt{[11(153)-37^{2} ][(11)(92)-26^{2} ] }}[/tex]

⇒ [tex]r=\frac{1078-962}{\sqrt{(1683-1369)(1012-676)} }[/tex]

⇒ [tex]r=\frac{116}{\sqrt{(314)(336)} }[/tex]

⇒ [tex]r=\frac{116}{324.81}[/tex]

⇒ [tex]r=0.357[/tex] ≈ [tex]0.36[/tex]

Hence we can conclude that the correlation coefficient for Alfonso survey is 0.36.

Learn more about correlation coefficient here

https://brainly.com/question/19560394

#SPJ2

Answer:

(11+12+17)x = 40x.

Step-by-step explanation:

Rs 3520 is divided in the Ratio 11:12:17 as Rs 968, Rs 1056, Rs 1496. According to the question, we have to divide Rs 3520 in the ratio 11:12:17. Let the common ratio be x. So, total share = (11+12+17)x = 40x.

-x/2+4<12

      -4  -4

-x/2<8

  *2  *2

-x<16

/-1 /-1

x<-16

---

hope it helps

Answer:

Percent increase is 21%

Step-by-step explanation:

Initial cost of shoes = $72

New price of shoes = $87

Increase in price of shoes = New price of shoes - Initial cost of shoes

= [tex]87-72[/tex]

= $15

Percentage increase in price of shoes = ( Increase in price of shoes ÷ Initial cost of shoes) × 100

= [tex]\frac{15}{72}(100)=20.8\%[/tex]

≈ 21%

So, percent increase is 21%

Answer:

[tex]\sqrt{0.5}[/tex]

Step-by-step explanation:

cosx=adj/hyp

adj= [tex]\sqrt{2}[/tex]/2

hyp= r

cos(45)= ([tex]\sqrt{2}[/tex]/2)/r

[tex]\sqrt{2}[/tex]/2 = ([tex]\sqrt{2}[/tex]/2)/r

   multiply both sides by r

([tex]\sqrt{2}[/tex]/2)r = [tex]\sqrt{2}[/tex]/2

    divide both sides by [tex]\sqrt{2}[/tex]/2

r = 1

pythagorean theorem: [tex]a^{2}[/tex] + [tex]b^{2}[/tex] = [tex]c^{2}[/tex]

a = [tex]\sqrt{2}[/tex]/2

b = y

c = r = 1

[tex](\sqrt{2}/2)^{2}[/tex] + [tex]y^{2}[/tex] = [tex]1^{2}[/tex]

    [tex](\sqrt{2}/2)^{2}[/tex] = 2/4 = 0.5

0.5 + [tex]y^{2}[/tex] = 1

    subtract 0.5 from 1

[tex]y^{2}[/tex] = 0.5

[tex]\sqrt{y^{2}}[/tex] = [tex]\sqrt{0.5}[/tex]

y = [tex]\sqrt{0.5}[/tex]

Answer:

y = 4 + x

Step-by-step explanation:

Appetizer recipe Miki knows already = 4

Appetizer recipe learnt per week = 1

x = number of weeks

y = total number of appetizer recipes Miki knows

Equation that shows the relationship between the number of weeks x and the number of appetizer recipes y

y = 4 + x

Answer:

5/8 * n = 55

Step-by-step explanation:

Answer:

3.14

Step-by-step explanation:

Answer:

1, Because the half-life is 6 hours, the initial amount is halved every 6 hours. Due to the total of 18 hours, the starting amount will be divided by 2 (halved) three times. You will then have one-sixth of the original amount, which is 384 grams divided by six equals 48 grams.

Step-by-step explanation:

Answer:

I think the answer is B - 16

Step-by-step explanation:

Sorry if I'm wrong

Answer:

T = 0.29p

Step-by-step explanation:

From the table Given :

We can obtain the uint cost per pound of wood :

Cost of 12 pounds of wood = $3.48

Cost per pound = Cost / weight

Cost per pound = $3.48 / 12 = $0.29

Hence, the proportional relationship cost, T in dollars and p pounds of wood is ;

Cost = unit cost per pound * number of pounds

T = 0.29 * p

T = 0.29p

Answer:

I’m doing the assignment and in the reading it says In this lesson, you’ll be exploring how changes in the dimensions of a figure affect its area. so I say. False

hope this helps

Step-by-step explanation:

The statement is false because the area could be changed if the dimensions are changed.

Supposing that there is no direct formula available for deriving the area,

we can derive the area of that region by dividing it into smaller pieces, whose area can be known directly.

Then summing all those pieces' area gives us the area of the main big region.

The statement is given that 'Changes in the dimensions of the shape do not affect the area of the shape'.

The statement is false because the area could be changed if the dimensions are changed.

Learn more about area here:

https://brainly.com/question/13004063

#SPJ2

Answer:

$17,442 is the total cost after tax if that is what you're asking for.

Step-by-step explanation:

cost x 1.02

Answer:

Total cost: $17,442

Just tax: $342

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

I'm positive its B, if it's not B then then D

hope this helps!

Answer How many solutions does the nonlinear system of equations graphed below have?

Look at the number of points where the graphs intersect each other...the points where the graphs of the functions cross each other are the solutions to the system.

Upon looking, you should see 4 points where the graphs intersect, so there are 4 solutions to the non-linear system of equations.

Answer:

Where is the schools coordinates subtract two thirds from whatever the schools coordinates are and you will have your answer for Dyami

Step-by-step explanation:

Answer:

it's true

Step-by-step explanation:

You are not gaving the exact question

Answer:

hi the answer submersible

Answer:

y=26 (no x ) the y int is 26 I believe

Step-by-step explanation:

Answer:

ok

Step-by-step explanation:

Answer:

the area is 17.5 ft if the shape is a square/rectangle

the area is 8.75 ft if the shape is a triangle

Step-by-step explanation:

Answer:

27

Step-by-step explanation:

Answer:

[tex]\frac{333}{1000}[/tex] ≠ 0.3 because it is 0.333, not 0.3 .

0.3 is defined by [tex]\frac{3}{10}[/tex].

Hope this helps!

Answer:

x ≥ 1

Step-by-step explanation:

3 + 4x ≥ 7

3 - 3 + 4x ≥ 7 - 3

4x ≥ 4

4x / 4 ≥ 4 / 4

x ≥ 1

Answer:

41 days

Step-by-step explanation:

512.5 ÷ 12.5 = 41 days

Answer:-3x^2(9x^5-5)

Step-by-step explanation:

Step-by-step explanation:

-3x2(x2)-9x3+25x2

-3x2(x2+3x-5)

Answer:

3/4 is 75/100 or 0.75

Step-by-step explanation:

Answer: 1150 turns

Step-by-step explanation: radius of wheel is 0,9 m

In one turn wheel moves 2·pi·0,9 m = 5,652 m

You divide 6500 m : 6,652 m = 1150

The number of complete turns each wheel makes in travelling the 6.5 km is 1150 turns

A circle is a shape consisting of all points in a plane that are given the same distance from a given point called the center.

We know that circumference of the circle that has a radius of r is defined as the product of diameter to the pie value.

The circumference of the circle = 2πr

WE have been given the radius of wheel is 0.9 m

In one turn wheel moves 2πr

= 2 x π x 0.9 m

= 5.652 m

Now we have to divide 6500 m : 6.652 m

= 1150

Learn more about circumference here;

brainly.com/question/12512221

#SPJ2