Could someone give me the answer to this.

Answer:

Correlation Coefficient

Step-by-step explanation:

The correlation coefficient (r) is a numerical measure that measures the strength and direction of a linear relationship between two quantitative variables.

Answer:

c is true

Step-by-step explanation:

Answer:

[tex]t=\frac{7.4-7}{\frac{0.7}{\sqrt{7}}}=1.512[/tex]    

The degrees of freedom are

[tex]df=n-1=7-1=6[/tex]  

And the p value for this case is:

[tex]p_v =2*P(t_{(6)}>1.512)=0.181[/tex]  

The p value is a higher value and using a significance levels of 5% or 10% we see that the p value is higher than the significance level and then we FAIL to reject the null hypothesis and we don't have enough evidence to conclude that the true mean is different from 7 ounces.

Step-by-step explanation:

Information provided

[tex]\bar X=7.4[/tex] represent the sample mean

[tex]s=0.7[/tex] represent the sample standard deviation

[tex]n=7[/tex] sample size  

[tex]\mu_o 7[/tex] represent the value to verify

t would represent the statistic

[tex]p_v[/tex] represent the p value

System of hypothesis

We want to verify if the average amount of coffee per cup is different from 7 ounces, the system of hypothesis would be:  

Null hypothesis:[tex]\mu = 7[/tex]  

Alternative hypothesis:[tex]\mu \neq 7[/tex]  

The statistic is given by:

[tex]t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}[/tex]  (1)  

Replacing the info given we got:

[tex]t=\frac{7.4-7}{\frac{0.7}{\sqrt{7}}}=1.512[/tex]    

The degrees of freedom are

[tex]df=n-1=7-1=6[/tex]  

And the p value for this case is:

[tex]p_v =2*P(t_{(6)}>1.512)=0.181[/tex]  

The p value is a higher value and using a significance levels of 5% or 10% we see that the p value is higher than the significance level and then we FAIL to reject the null hypothesis and we don't have enough evidence to conclude that the true mean is different from 7 ounces.

Answer:

A and D

Step-by-step explanation:

Either rotate the dilated circle 180° about point C or Translate the dilated circle so that it's centre is at point B so that we come to know that the circles are similar

The net outward flux across the boundary of the tetrahedron is: -4

What is the gradient of a function in a vector field?

The gradient of a function is related to a vector field and it is derived by using the vector operator ∇ to the scalar function f(x, y, z).

Given vector field:

F = ( -2x, y, - 2 z )

[tex]\mathbf{\nabla \cdot F = ( i \dfrac{\partial }{\partial x }+ j \dfrac{\partial}{\partial y} + k \dfrac{\partial}{\partial z}) \langle -2x, y, -2z \rangle}[/tex]

[tex]\mathbf{ \nabla \cdot F = ( \dfrac{\partial }{\partial x }(-2x)+ \dfrac{\partial}{\partial y}(y) + \dfrac{\partial}{\partial z}(-2z))}[/tex]

= -2 + 1 -2

= -3

According to divergence theorem;

Flux [tex]\mathbf{=\iiint _v \nabla \cdot (F) \ dv}[/tex]

x+y+z = 2; [tex]1^{st}[/tex]  Octant

[tex]= \int\limits^2_0 \int\limits^{2-x}_0 \int\limits^{2-x-y}_0 -3dzdydx[/tex]

[tex]=-3 \int\limits^2_0 \int\limits^{2-x}_0 (2-x-y)dy dx[/tex]

[tex]= -3 \int\limits^2_0[(2-x)y - \dfrac{y^2}{2}]^{2-x}__0 \ \ dx[/tex]

[tex]= -3 \int\limits^2_0(2-x)^2 - \dfrac{(2-x)^2}{2} dx[/tex]

[tex]= -3 \int\limits^2_0\dfrac{(2-x)^2}{2} dx = - \dfrac{3}{2} \int\limits^2_0(4-4x+x^2) dx[/tex]

[tex]=- \dfrac{3}{2}(4x-x^2 + \dfrac{x^3}{3})^2_0[/tex]

[tex]=- \dfrac{3}{2}(8-8+\dfrac{8}{3})[/tex]

[tex]=- \dfrac{3}{2}(\dfrac{8}{3})[/tex]

= -4

Therefore, we can conclude that the net outward flux across the boundary of the tetrahedron is: -4

Learn more about the gradient of a function here:

https://brainly.com/question/6158243

Answer:

4over27

Step-by-step explanation:

8over9 divided by 6 equals 8over54 which simplifies to 4over27

Answer:

4 over 27

Step-by-step explanation:

she spent 6 day reading, there 7 day in a week so we have to change it to 7 and four pages.

Answer:

D.

Step-by-step explanation:

In the attached file

Answer:

3 1/2

Step-by-step explanation:

7 1/4 - 3 3/4

Borrow 1 from the 7 in the form of 4/4

6 + 4/4 + 1/4 - 3 3/4

6 5/4 - 3 3/4

3 2/4

Simplify the fraction

3 1/2

Answer:

[tex]3 \frac{1}{2} [/tex]

Step-by-step explanation:

[tex]7 \frac{1}{4} - 3 \frac{3}{4} \\ \frac{29}{4} - \frac{15}{4} \\ = \frac{14}{4} \\ = \frac{7}{2} \\ = 3.5 = 3 \frac{1}{2} [/tex]

hope this helps

brainliest appreciated

good luck! have a nice day!

Answer:

Find half the difference of 14 and 6, multiply by 6, then add 4.(B)

Step-by-step explanation:

Answer:

109.090909....%(goes on indefinitely)

Step-by-step explanation:

If you are only consuming 1100, and your goal is 1200, as a percentage your target is 1200/1100 of what you are consuming. That simplifies to 12/11, which would mean as a percentage, your target is 109.0909090909...% of what you are consuming.

Answer:

Step-by-step explanation:

84?

8+4 is 12, and 84 is greater than 80, and less than 90

Answer:

84

Step-by-step explanation:

Answer:

Step-by-step explanation:

1. 6w*2v + 3*6w= 12vw + 18w

2. 7(-5v) - 7(8)= -35v - 56

3. 2x*(-2x) - 3(2x) = -4x^2 - 6x

4. -4*v - 4(1)= -4v - 4

5. 2n*6n + 2n + 2*6n + 2= 12n^2 + 14n + 2

6. 4n(2n) + 4n(6) + 2n + 6= 8n^2 + 26n + 6

7. x(6x) - 2x - 18x + 6 = 6x^2 - 20x + 6

8. 8p(6p) + 8p(2) - 2(6p) - 4 = 48p^2 + 16p - 12p - 4= 48p^2 + 4p - 4

9. 6p(5p) - 6p(8) + 8(5p) - 40= 30p^2 - 48p + 40p - 40= 30p^2 - 8p - 40

10. 3m(8m) + 3m(7) - 8m - 7 = 24m^2 + 21m - 8m - 7= 24m^2 + 13m - 7

11. 2a(8a) - 2a(5) - 8a + 5 = 16a^2 - 10a - 8a + 5 = 16a^2 - 18a + 5

12. 5n(5n) - 5n(5) + 6(5n) - 6(5)= 25n^2 - 25n + 30n - 30= 25n^2 + 5n - 30

13. 4p(4p) - 4p - 4p + 1 = 16p^2 - 8p +

14. 7x(5x) + 7x(6) -6(5x) - 6(6)= 35x^2 + 42x - 30x - 36= 35x^2 + 12x - 36

Answer:

About 36.87

Step-by-step explanation:

The sine of an angle in a right triangle is the length of the opposite side divided by the length of a hypotenuse, which in this case is 3/5. Therefore, the measure of the angle is the arcsin of 3/5 or about 36.87 degrees. Hope this helps!

Answer:

X probability = 0.02

Cumulative frequency at x ( 6 ) = 1

Step-by-step explanation:

X       P ( X )            Cf ( X )

1        0.58                0.58

2        0.18                0.58 + 0.18 = 0.76

3        0.10                0.76 + 0.10 = 0.86

4        0.07                0.86 + 0.07 = 0.93

5        0.05                0.93 + 0.05 = 0.98

6        0.02                0.98 + 0.02 = 1

Answer:

1.98

Step-by-step explanation:

y - x + z for

x = 4.7, y = 6, and z=0.68

6 - 4.7 +.68

1.3+.68

1.98

Answer:

[tex]= 1.98 \\ [/tex]

Step-by-step explanation:

given that,

[tex]x = 4.7 \\ y = 6 \\ z = 0.68[/tex]

Let's solve now

[tex]y - x + z \\ 6 - 4.7 + 0.68 \\ 1.3 + 0.68 \\ = 1.98[/tex]

Answer:

Step-by-step explanation:

for n ∈ N

Since Actuary Rahul examines low-risk policies, continuing until a policy with a claim is found and then stopping.

∴ the probability that Actuary Rahul examines exactly n policies

[tex](0.9)^{n-1}.(0.1)---(1)[/tex]

the probability that Actuary Toby examines more than  exactly n policies

[tex](0.8)^n---(2)[/tex]

Given that policies are actually independent

∴ the probability that the event  (1) and (2) happens simultaneously is

[tex](0.9)^{n-1}*(0.1)*(0.8)^n[/tex]

∴  the probability that Actuary Rahul examines fewer policies than Actuary Toby

[tex]\sum ^\infty _{n=1} (0.9)^{n-1}*(0.1)*(0.8)^n\\\\=(\frac{0.1}{0.9} \sum ^\infty _{n=1}(0.72)^n\\\\=\frac{1}{9} (\frac{0.72}{0.28} )\\\\=\frac{2}{7} \\\\=0.2857[/tex]

Answer:

Option (2)

Step-by-step explanation:

Option (1).

Time taken by Tina to walk = 56 minutes

Time taken by her sister to walk the same distance = x minutes

If both the sisters take the same time to walk, then

x = 56 minutes

Option (2).

Let the height of Tina = x inches

and the height of her brother = 56 inches

if Tina is shorter than her brother then,

x < 56 inches

Option (3).

Tina's dog weighed two months ago = 56 pounds

If the dog gained the weight in two months then weight before 2 months will be less than the present weight.

Let the weight of her dog is x pounds now,

x > 56 pounds

Option (4).

Amount with Tina = $x

Cost of the camera = $56

If the money with Tina has enough money to buy the camera, then the amount of money with her will be higher than the cost of the camera.

x > $56

Option (2) will be the answer.

Answer:

 Slope = 4.000/2.000 = 2.000

 x-intercept = 6/2 = 3

 y-intercept = -6/1 = -6.00000

Step-by-step explanation:

Step by step solution :

Step  1  : Equation of a Straight Line

Graph of a Straight Line

Calculate the Y-Intercept

Calculate the X-Intercept

Calculate the Slope

Answer for y=2x-6  is below

Answer:  

Slope = 4.000/2.000 = 2.000

 x-intercept = 6/2 = 3

 y-intercept = -6/1 = -6.00000

Hope this helps.

Answer:

theres no picture or something for the value of k

Answer:

Step-by-step explanation:

7.9

Answer:

y - 4 = (-3/2)(x - 4)

Step-by-step explanation:

Here's how we obtain the blue graph:

1) translate the red graph 5 units to the right, and

2) translate the resulting graph 5 units upward.

The equation of the blue graph is y - 4 = (-3/2)(x - 4)

Answer:

10 cm

Step-by-step explanation:

نستخدم فيثاغورس

ٲب²+ب ج²=ج ٲ²

ج ٲ²= 6²+8²

ج ٲ²= 100

ج ٲ= 10 سم

Answer:

Bottom prism: 126*11=1386    

Top Prism: 2*45=90

Total volume: 1386+90= 1746 cubic cm

Answer:

5 meters

Step-by-step explanation:

If the smallest rectangle has a length of 8 meters, and a perimeter of 24 meters then its width is given by:

[tex]24 = 2*8+2*W_1\\W_1= 4\ meters[/tex]

We can conclude that the width is half of the length for both rectangles. Therefore, the width of the larger rectangle, with a perimeter of 30 meters, is:

[tex]30 = 2*W_2+2*L_2\\30 = 2*W_2+4*W_2\\W_2=5\ meters[/tex]

The width of the original rectangle is 5 meters.

Answer:

5

Step-by-step explanation:

Find the scale factor

we know that

If two figures are similar, then the ratio of its perimeters is equal to the scale factor

Let

z -----> the scale factor

P1 -----> the perimeter of the reduced rectangle on the right

P2 ----> the perimeter of the original rectangle on the left

substitute

step 2

Find the width of the reduced rectangle on the right

substitute the given values.

Find the width of the original rectangle on the left.

To find the width of the original rectangle on the left, divide the width of the reduced rectangle on the right by the scale factor.

Answer:

Hello

The answer is 3855'5

Step-by-step explanation:

At first change lbs to kg.

Then you'll change the kg to grkg×1000=gr

Answer:

  75% reduction

Step-by-step explanation:

The price dropped by $120. As a percentage of the original price, that is ...

  -$120/$160 × 100% = -75%

The price changed by -75%.

Answer:

75% decrease.

Step-by-step explanation:

The original price is $160 and we went to $40.

That means the price got reduced by $120 in the process.

$120/$160 = 0.75 = 75%.

So in other words, we lost 75% of the price ($120) and got left with 25% of the price ($40).

I hope this helps!

Answer:

i) 3x

ii) d = 260 - 3x

Step-by-step explanation:

Given:

Conner traveled x feet

Alexandra traveled 2x feet

Total distance = 260 ft

i) The expression in terms of x to represent the total number of feet Conner and Alexandra have walked toward one another will be:

This will be the total number of feet they have walked towards one another

= x + 2x

= 3x

ii) An expression in terms of x to represent the distance (in feet) between Conner and Alexandra.

This will be to find the distance between Conner and Alexandra.

Thus, distance between them will be:

d = 260 - (x + 2x)

d = 260 - 3x

Answer:

Average income for the remaining 8 months = $2,111.25

Step-by-step explanation:

Given:

Average income of 4 months = $1,420.25

Annual average income = $1,780.75

Find:

Average income of 8 months

Computation:

⇒ Annual average income = [Average income of 4 months + Average income of 8 months] / 2

⇒ $1,780.75 = [$1,420.25 + Average income of 8 months] / 2

⇒ $3,561.5 = $1,420.25 + Average income of 8 months

⇒ Average income of 8 months = $3,561.5 - $1,420.25

Average income of 8 months = $2,111.25

Answer:

x = 23

Step-by-step explanation:

2x + 5y = 35 * (-3) ------>  -6x -15y = -105 (A)

x = -10 - 15y -----> x + 15y = -10 (B)

(A) + (B)

-5x = -115

x = 23

Answer:

I think that it would be A

Step-by-step explanation:

If it were not a sailor, I would say B, but a sailor can face a hurricane at sea.