Jane said that 6(64) = 6(50) + 6(14). Is she correct? Use the Distributive Property to explain your answer.

Answer:

A

Step-by-step explanation:

Answer:

when I finish the test I will tell you the right answerer

Step-by-step explanation:

Answer:

The mean and standard devaition of W are 6 and 31 respectively.

Step-by-step explanation:

Given that:

W = 7 + 2X

Variance (W) = Variance(7 + 2X)

For a term constant term, the variance is zero.

So;

[tex]W = Var (2X)[/tex]

W = 4 × Var(X)

W = 4 × (SD (X))²

W = 4 × (3)²

W = 4 × 9

W = 36

Thus, Variance (W) = 36

The standard deviation of W = [tex]\sqrt{variance}[/tex]

W = [tex]\sqrt{36}[/tex]

W = 6

Also;

E(W) = E(7 +2 X)

E(W) = 7 + 2 × E(X)

where;

mean X = 12

E(W) = 7 + 2(12)

E(W) = 31

Thus, the mean and standard devaition of W are 6 and 31 respectively.

The mean and the standard deviation of W are 31 and 6 respectively.

The given parameters are:

[tex]\mathbf{\bar x_x = 12}[/tex]

[tex]\mathbf{\sigma_x = 3}[/tex]

The definition of W is given as:

[tex]\mathbf{W = 7 + 2X}[/tex]

This means that:

[tex]\mathbf{Var(W) = Var(7) + Var(2X)}[/tex]

So, we have:

[tex]\mathbf{Var(W) = 0 + Var(2X)}[/tex] --- the variance of a constant term is 0

[tex]\mathbf{Var(W) = Var(2X)}[/tex]

This gives

[tex]\mathbf{Var(W) = 2^2 \times Var(X)}[/tex]

We have:

[tex]\mathbf{Var(X) = \sigma^2_x}[/tex]

So, the equation becomes

[tex]\mathbf{Var(W) = 2^2 \times \sigma^2_x}[/tex]

[tex]\mathbf{Var(W) = 2^2 \times 3^2}[/tex]

[tex]\mathbf{Var(W) = 36}[/tex]

The standard deviation is then calculated as:

[tex]\mathbf{\sigma_W = \sqrt{Var(W)}}[/tex]

[tex]\mathbf{\sigma_W = \sqrt{36}}[/tex]

[tex]\mathbf{\sigma_W = 6}[/tex]

The mean is then calculated as:

[tex]\mathbf{E(W) = E(7 + 2X)}[/tex]

This gives

[tex]\mathbf{E(W) = 7 + 2E(X)}[/tex]

So, we have:

[tex]\mathbf{E(W) = 7 + 2 \times 12}[/tex]

[tex]\mathbf{E(W) = 31}[/tex]

Hence, the mean and the standard deviation of W are 31 and 6 respectively.

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Answer:

62

Step-by-step explanation:

Turn the percentage into a decimal.

50% = 0.5

Divide.

31 / 0.5 = 62

Best of Luck!

Answer:

62

Step-by-step explanation:

50% is technically 1/2 right?

So, if 31 is half of this mysterious number then we just need to times 31 by 2.

Therefore, 31 * 2 = 62.

We can check this by multiplying 62 by .50 (remember that when using percents in an operation we move the decimal over twice)

62 * .50 = 31

I hope this helps!!

If you have any question just ask!

- Kay :)

Answer:

6

Step-by-step explanation:

Find mean

Find. Absolute deviation=[Xi-mean]

Find mean deviation

Answer:

b and d i think.

Step-by-step explanation:

B passes through the ordered pairs negative 3, 8 and 2, negative 7.

D passes through the ordered pairs 1, 4 and negative 4, negative 1 and is extrapolated further in the quadrant.

Answer:

b and d

Step-by-step explanation:

Answer:

put one number in front of the other

Answer:

A) Null hypothesis: H0: p_o ≤ 0.2

Alternative hypothesis: Ha: p_o > 0.2

B) Null hypothesis: H0: μ = 3

Alternative hypothesis: Ha: μ ≠ 3

C) Null hypothesis: H0: p_o ≥ 0.15

Alternative hypothesis: Ha: p_o < 0.15

D) Null hypothesis: H0: μ ≤ 10

Alternative hypothesis: Ha: μ > 10

E) Null hypothesis: H0: μ = 15

Alternative hypothesis: Ha: μ ≠ 15

Step-by-step explanation:

A) Null hypothesis: H0: p_o ≤ 0.2

Alternative hypothesis: Ha: p_o > 0.2

B) Null hypothesis: H0: μ = 3

Alternative hypothesis: Ha: μ ≠ 3

C) Null hypothesis: H0: p_o ≥ 0.15

Alternative hypothesis: Ha: p_o < 0.15

D) Null hypothesis: H0: μ ≤ 10

Alternative hypothesis: Ha: μ > 10

E) Null hypothesis: H0: μ = 15

Alternative hypothesis: Ha: μ ≠ 15

Answer:

-3/8

Step-by-step explanation:

I would use a table

x      y

-4     5

-12    8

from -4 to -12 you subtract -8

from 5 to 8 you add 3

so y/x  = 3/-8

The slope is - [tex]\frac{3}{8}[/tex]

Hope this helped!

Answer:

$26.80/shoe

Step-by-step explanation:

Answer:

This population, the population is 45 fish.

Step-by-step explanation:

This problem can be solved by a rule of three.

Last year there were 60 fish in the lake. That was 100, that is, decimal 1.

This year it decreased 25%. So there 100%-25% = 75%, that is decimal 0.75. So

60 fish - 1

x fish - 0.75

x= 60*0.75

x=45

This population, the population is 45 fish. Please make the brainliest.

60-25% of 60 =number of fish this year

60-25/100 x 60

60-15

45 fish are present in the lake

Step-by-step explanation:

We have 8 + 12 + x = 29.

Solving, we get x + 20 = 29, x = 9.

Answer:

9 cm

Step-by-step explanation:

The perimeter of a polygon is the sum of the lengths of all the sides of the polygon.

If a polygon is a triangle, and its 3 sides have length a, b, and c, then the perimeter is the sum of a, b,, and c.

perimeter = a + b + c

Here, the perimeter = 29 cm

The lengths of the sides are a = 8 cm, b = 12 cm, c = x.

8 + 12 + x = 29

x + 20 = 29

x = 9

Answer: 9 cm

Answer:

The arithmetic between 42 and 86 is 44

Step-by-step explanation:

Answer:

b. Use sigma notation to represent the number of seats in the theater.

Answer:

She added incorrectly

Step-by-step explanation:

Answer should be (22, -26) but Kelcy got wrong because she has taken -1 in third step instead of taking 1 because -4 +5 is 1.

A vector is a quantity or phenomenon that has two independent properties: magnitude and direction.

Let  u = ⟨9, –2⟩, v = ⟨–4, 3⟩, and w = ⟨5, 1⟩

3u – 5(v + w)

3(9, -2)-5(⟨–4, 3⟩+⟨5, 1⟩)

Multiply 3 to (9, -2) and add v and w

(27,-6)-5(1,4)

(27, -6)-(5, 20)

Subtract the vectors

(27-5, -6-20)

(22, -26)

The answer should be (22, -26) but Kelcy got wrong because she has taken -1 in third step instead f taking 1 because -4 +5 is 1.

Hence,  answer should be (22, -26) but Kelcy got wrong because she has taken -1 in third step instead f taking 1 because -4 +5 is 1.

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#SPJ2

Answer:

Step-by-step explanation:

Using the information provided we can create two different equations for this system. The first of which would be Fred's overall weight, while the second equation would be Fred's and Barney's combined weight. These equations would be the following...

F = 2B - 40

320 = F + B

As requested I will not solve the system of equations and leave them as they are.

Answer:

7

Step-by-step explanation:

[tex] \frac{6}{24} = \frac{x}{28} \\ \\ x = \frac{ \cancel6 \times \: 28}{ \cancel{24} \: \: \:\red{\bold {4}} } \\ \\ x = \frac{28}{4} \\ \\ x = 7[/tex]

Answer:

7.125

and 5.1

Step-by-step explanation:

Answer:

$9.38

Step-by-step explanation:

( $1.75 + $8.87 ) = 10.62 (10.62 - $20 ) = $9.38

brainliest please

If you reflect the rectangle across either the horizontal or the vertical line going straight through the middle, you will reflect it onto itself (see image).

The equation for the horizontal line is y = -1. The equation for the vertical line is x = -1.

Step-by-step explanation:

please talk to me I'm missing u so much

Answer:

24.04%

Step-by-step explanation:

Given that:

Mortgage = $238,000

Number of years = 30

Monthly payment without extra payment= $1220.09

Monthly payment with extra payment = $1420.09

Total amount paid :

Number of months * monthly payment

12 months = 1year

30 years = (30 * 12) = 360 months (without extra payment)

22 years 5 months = (22 * 12) + 5 = 269 months (with extra payment)

Amount paid without extra payment :

$1220.09 * 360 = $439232.4

Percentage of total loan paid as interest :

((439232.4 - 238000) / 238000) * 100%

= 0.8455142 = 84.55%

Amount paid with extra payment :

$1420.09 * 269 = 382004.21

Percentage of total loan paid as interest :

((382004.21 - 238000) / 238000) * 100%

= 0.6050597 = 60.51%

Difference between percentages:

84.55% - 60.51% = 24.04%

Answer:

The fraction of its drop height after the fourth bounce is

[tex]\displaystyle \frac{16}{625}[/tex]

Step-by-step explanation:

Let's suppose the rubber ball is dropped from a height H0. Every time the ball bounces back it reaches 8/10 of the initial drop height.

The ball's height H(x) after bounce number x is:

[tex]\displaystyle H(x)=H_o\left(\frac{8}{20}\right)^x[/tex]

Simplifying:

[tex]\displaystyle H(x)=H_o\left(\frac{2}{5}\right)^x[/tex]

After the fourth bounce, the height is:

[tex]\displaystyle H(4)=H_o\left(\frac{2}{5}\right)^4[/tex]

[tex]\displaystyle H(4)=H_o\frac{2^4}{5^4}[/tex]

[tex]\displaystyle H(4)=H_o\frac{16}{625}[/tex]

The fraction of its drop height after the fourth bounce is

[tex]\mathbf{\displaystyle \frac{16}{625}}[/tex]

Answer:

ok i will look at it :)

Step-by-step explanation:

Answer:

Ok, I will try!!! :D

What is your recent question, btw....you most recent is ELA

Answer:

You didn't put the worksheet.

Answer:

valley is 16

skyler is 21

lindsay is 29

hope this helps!

Answer:

-∞ < y < ∞

Step-by-step explanation:

Range corresponds to the values on the y-axis and Domain corresponds to values on the x-axis. Here if see the graph the range depends on values on y-axis and we can see that the the graph goes to -∞(-negative infinity) to +∞(positive infinity)  so the answer is

-∞ < y < ∞

Answer:

The range is  -∞< y < ∞, below is the explanation of how to get range.

Step-by-step explanation:

Given:

      Graph of a function h(x).

To find:

      The range of the function in inequality notation.

The range is all possible y-values of the function. Let's find all possible y values from the graph.

If we see the graph, it has a vertical asymptote at x=1 and a slant asymptote.

But it tool all y values from -infinity to infinity.

So, we can write range as -∞< y < ∞ because both sides of the function go and so on below the x-axis and go and so on above the x-axis.

The range is  -∞< y < ∞ .

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Answer:

A(3) = -6 + (3 - 1) (5)

-6 + (2)(5)

-6 + (10)

4

A(4) = -6 + (4 - 1) (5)

-6 + (3)(5)

-6 + 15

9

A(10) = -6 + (10 - 1) (5)

-6 + (9)(5)

-6 + 45

39

Answer: y => 12

y is greater than or equal to 12

Step-by-step explanation:

So they give you the function of y = 2x + 4 and the domain of all real numbers is greater than or equal to 4.

In simple term, the domain is x => 4, x is greater than or equal to 4.

Using that we can substitute the x in the function by 4.

y = 2(4) + 4

y = 8 + 4

Which gave us the answer of 12.

Since the domain can be anything greater than 4 or 4. We can expect the

same for the range.

Then the range will be 12 or greater than 12. For example, 13, 14, 15, 16...

Ex. y = 2(5) + 4

y = 10 + 4

y = 14

Ex. y = 2(4.5) + 4

y = 9 + 4

y = 13