1 hour = $140
4 hour =$320
5 hour=$380
Only hour 1 has a one time fee for plumbing how much it it

The probability that a random sample of 3 has a mean between 641 and 646, given a normal population with a mean of 640 and a standard deviation of 20, is approximately 0.8115.

To find this probability, follow these steps:
1. Calculate the standard error (SE) of the sample mean: SE = σ/√n = 20/√3 ≈ 11.55
2. Find the z-scores for 641 and 646: z1 = (641 - 640)/11.55 ≈ 0.087, z2 = (646 - 640)/11.55 ≈ 0.520
3. Use a z-table or calculator to find the area between z1 and z2: P(0.087 < z < 0.520) ≈ 0.8115

In this scenario, the probability of obtaining a random sample of 3 with a mean between 641 and 646 from the given population is approximately 81.15%.

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Answer:

523.598776

Step-by-step explanation:

round to 524

Answer:

3,500,000

Step-by-step explanation:

Answer:

Sue biked 3,500,000 centimetres.

Step-by-step explanation:

First, multiply 5 km by 7 (days). 5 × 7 = 35 km

Convert the kilometres to centimetres.

There are 100,000 cm in a kilometer, so multiply:

35 × 100,000 = 3,500,000 cm.

The angle W equal to 24.3

In a triangle sum of three angles is equal to 180

W = (3x-24) degree

C = (4x-11) degree

T = 2x degree

3x-24+4x-11+2x=180

9x-35=180

9x=180-35

9x= 145

x=16.1

substitute the value of x in W equation

W = 3(16.1)-24 = 24.3

The value of angle W is 24.3

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Answer:

Step-by-step explanation:

Use of formula:

a) Find each part of distance and add together. Convert minutes to hours.

b) Average speed is:

Answer:

(a)  142 km

(b)  40.57 km/h (2 d.p.)

Step-by-step explanation:

\(\boxed{\sf Distance=Speed \times Time}\)

Given:

Substitute the given values into the distance formula to find the distance travelled:

\(\implies \sf Distance = 35 \times 2 = 70\;km\)

Given:

Substitute the given values into the distance formula to find the distance travelled:

\(\implies \sf Distance = 48 \times 1.5 = 72\;km\)

Therefore, the total distance travelled is:

\(\implies \sf 70 + 72 = 142 \; km\)

\(\boxed{\sf Average\;speed=\dfrac{Total\;distance}{Total\;time}}\)

Given:

Substitute the given values into the average speed formula to find the average speed over the entire journey:

\(\implies \sf Average\:speed=\dfrac{142}{3.5}=40.57\;km/h\;(2\;d.p.)\)

Answer:

69p each

Step-by-step explanation:

well if each daisy is 61p you want to multiply that price by 6 to get total daisy price, which is £3.66 Then you take £8.49 from £3.66 to get the total price of the daffodils, which is £4.83. Then you divide the the price by the number of daffodils which is 69p. :))(

By using Dirac delta function, δ(c0sθ- cosθ)= δ(θ-θ’)/sin θ’= δ (θ- θ’)/ sin θ.

Here's how to show that δ(x^2-a^2)=1/2a[δ(x-a)+ δ(x+a)]

To show that δ(x^2-a^2)=1/2a[δ(x-a)+ δ(x+a)],

we can use the definition of Dirac delta function.

Dirac delta function is defined as follows:∫δ(x)dx=1and 0 if x≠0

In order to solve the given expression, we have to take the integral of both sides from negative infinity to infinity, which is given below:∫δ(x^2-a^2)dx=∫1/2a[δ(x-a)+ δ(x+a)]dx

To compute the left-hand side, we use a substitution u=x^2-a^2 du=2xdxWhen x=-a, u=a^2-a^2=0 and when x=a, u=a^2-a^2=0.

Therefore,-∞∫∞δ(x^2-a^2)dx=-∞∫∞δ(u)1/2adx=1/2a

Similarly, the right-hand side becomes:∫1/2a[δ(x-a)+ δ(x+a)]dx=1/2a∫δ(x-a)dx +1/2a∫δ(x+a)dx=1/2a + 1/2a=1/2a

Therefore,∫δ(x^2-a^2)dx=∫1/2a[δ(x-a)+ δ(x+a)]dxHence, δ(x^2-a^2)=1/2a[δ(x-a)+ δ(x+a)].

Next, we can show that δ(c0sθ- cosθ)= δ(θ-θ’)/sin θ’= δ (θ- θ’)/ sin θ as follows:We know that cosθ = cosθ' which implies θ=θ'+2nπ or θ=-θ'-2nπ.

Therefore, c0sθ-cosθ'=c0s(θ'-2nπ)-cosθ'=c0sθ'-cosθ' = sinθ'c0sθ-sinθ'cosθ'.

We can use the following identity to simplify the above expression:c0sA-B= c0sAcosB-sinAsinB

Therefore,c0sθ-cosθ' =sinθ'c0sθ-sinθ'cosθ'=sinθ'[c0sθ-sinθ'cosθ']/sinθ' =δ(θ-θ')/sinθ'

Hence,δ(c0sθ- cosθ)= δ(θ-θ’)/sin θ’= δ (θ- θ’)/ sin θ.

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Based on the histogram above, we will use median to describe this variable.

Hence, option (b) is correct choice.

A histogram is a graphical depiction of data distribution in statistics. The histogram is represented by a series of neighbouring rectangles, with each bar representing a different type of data. Statistics is a branch of mathematics that is used in a variety of areas.

The frequency distribution is represented graphically by a histogram.

The histogram may be analysed as a representation of frequencies and classes as linked rectangles.

Option B is the correct answer to this question.

Because the median is unaffected by big observations, we use it as a measure of central tendency while analysing the left skewed distribution.

The required image/ histogram is attached below:

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A standard subdivision consists of subdivisions with four or fewer parcels.

In a standard subdivision, the number of parcels is limited to four or fewer. This means that each subdivision within the standard subdivision will have a maximum of four parcels.

So, if you are looking for a standard subdivision, you can expect to find subdivisions with four or fewer parcels.

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Answer:

You can substitute by setting the equations equal to each other.

Use a calculator to solve.

In matrix notation, the model can be written as: Y = B * X + E

To write the design matrix and the form of the model for each of the given models, we need to arrange the data in matrix notation.

The given data set is as follows:

i    1.0    2.0    3.0    4.0    5.0

Y    8.4    12.1   14.7   9.3    6.1

X    2.0    3.0    4.0    2.0    1.0

a. Model: Y; = Bo + B1X; + Ei

Design Matrix:

1   X;

1   X;

1   X;

1   X;

1   X;

In matrix notation, the model can be written as:

Y = B * X + E

Where:

Y is the response vector (5x1)

B is the coefficient vector (2x1) containing Bo and B1

X is the design matrix (5x2) containing the first column of 1's and the X values

E is the error vector (5x1)

b. Model: Y; = B_X, + Bux} + BuX; + Ei

Design Matrix:

1   X1    X2

1   X1    X2

1   X1    X2

1   X1    X2

1   X1    X2

In matrix notation, the model can be written as:

Y = B * X + E

Where:

Y is the response vector (5x1)

B is the coefficient vector (3x1) containing Bo, B1, and B2

X is the design matrix (5x3) containing the first column of 1's, X1 values, and X2 values

E is the error vector (5x1)

Note: In the given data set, there is no explicit X2 column. Please provide the correct data if you want the accurate design matrix and model representation for model b.

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Answer:

The answer to the question in the first picture is the first one, "The thirty students studies for the test; only eight students got As."

I had a difficult time deciding whether the answer to the question in the second picture is the fourth one, "Her philosophy is that respect should not be given; it should be earned." or the first one, "Her philosophy is that respect should not be given, it should be earned." but I'm pretty sure that it is the fourth one. (I'm so sorry if it's wrong!)

The answer to the question in the third picture is the third one, "The new school will have many features: a huge gym, several science labs, and am extensive library."

Step-by-step explanation:

I hope this helps! Have a lovely day!! :)

(also, I'm really sorry if the answer for the second question is wrong)

The geometric sequence is 9 + 2 + 20 = 29.

The smallest number the third term in the geometric sequence can be is 29.

This is because when you add 2 to the second term and 20 to the third term of the three-term arithmetic sequence with a first term of 9,

the third term of the geometric sequence is 9 + 2 + 20 = 29.

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Answer:

Y'all playing with me........right???

7^2+18^2=49+324

49+324=373

19.31^2 would be your answer

Answer:

8

Step-by-step explanation:

Answer:

2.        3x + 4

Step-by-step explanation:

What we know:

w=x

Perimeter (p) = 8x+8

Formula for perimeter  p =2(L+W)

8x+8 =  2(L+W)

L+W is half, so    

 L+W = 4x+4

Substract W on both sides;

L = 4x+4 -W    

We know that  W = x

So

L= 4x+4-x

4x-x= 3x

L= 3x+4

it is not possible to find a unique vector x in R² whose image under the linear transformation T is the given vector b in R³

A linear transformation T: R² → R³ is defined by T(x) = Ax, where A is a matrix that performs the transformation, x is a vector in R², and T(x) is the resulting vector in R³. In this problem, you are asked to find a vector x in R² whose image under the transformation T is a given vector b in R³.
Since the linear transformation T maps from R² to R³, the matrix A must have a size of 3x2, meaning it has 3 rows and 2 columns. Therefore, when multiplying A with the vector x (size 2x1), the resulting vector T(x) will have a size of 3x1, which is a vector in R³.
Given that T(x) = b, to find the vector x in R², you would typically need to solve the equation Ax = b. However, in this case, it is impossible to find a unique solution for x because the transformation T maps from a 2-dimensional space (R²) to a 3-dimensional space (R³). There will be an infinite number of solutions, or no solutions at all, as there isn't a unique way to determine a vector in R² that maps to a specific vector in R³ using this transformation.

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Step-by-step explanation:

the range of a relation or function is the interval or set of valid result values (y values).

in contrast to the domain, which is the interval or set of valid x values.

so, as y values we have here

-3, -2, 0, 2

so, the third answer option is correct.

Answer: C

Step-by-step explanation: C

2 divided into 9 parts is 2/9.

Let's' explain this visually

Take this pizza, (image below)

Let's say we have two pizzas for 8 friends (including ourselves), so naturally, we'll cut the pizza's each into 9 slices, 1 for each, now everyone gets 1/9 of a pizza, but there are two pizzas, so if we add 1/9+1/9, we'll get two ninths.

Now 2/9=0.2 repeating!

This is how I got my answer sorry for the vague  explanation

Answer:

50.27 cm

Step-by-step explanation:

We Know

The area of the circle = r² · π

Area of circle = 64π cm²

r² · π = 64π

r² = 64

r = 8 cm

Circumference of circle = 2 · r · π

We Take

2 · 8 · (3.1415926) ≈ 50.27 cm

So, the circumference of the circle is 50.27 cm.

Answer: C=16π cm or 50.24 cm

Step-by-step explanation:

The formula for area and circumference are similar with slight differences.

\(C=2\pi r\)

\(A=\pi r^2\)

Notice that circumference and area both have \(\pi\) and radius.

\(64\pi=\pi r^2\)        [divide both sides by \(\pi\)]

\(64=r^2\)             [square root both sides]

\(r=8\)

Now that we have radius, we can plug that into the circumference formula to find the circumference.

\(C=2\pi r\)          [plug in radius]

\(C=2\pi 8\)          [combine like terms]

\(C=16\pi\)

The circumference Is C=16π cm. We can round π to 3.14.

The other way to write the answer is 50.24 cm.

Answer:

\(-x^2+x-1\)

Step-by-step explanation:

We know that:

f(x) = x^4 - x^3 + x^2

g(x) = -x^2

Our equation is (f/g)(x)

We can replace f and g with the functions given to us. Meaning we are dividing f by g.

\(\frac{x^4-x^3+x^2}{-x^2}\)

Since the lowest common power is 2, we can simplify the numerator into a trinomial function, taking out x^2.

\(\frac{x^2(x^2-x+1)}{-x^2}\)

Now since there are both x^2 in the numerator and denominator, cancel those out.

\(-(x^2-x+1)\)

Now distribute the negative sign.

\(-x^2+x-1\)

Answer:

\(\left(\dfrac{f}{g}\right)(x)= -x^2+x-1\)

Step-by-step explanation:

Given polynomial functions:

\(\begin{cases}f(x)=x^4-x^3+x^2\\g(x)=-x^2 \end{cases}\)

The composite function (f/g)(x) means to divide function f(x) by function g(x):

\(\begin{aligned}\left(\dfrac{f}{g}\right)(x) & = \dfrac{x^4-x^3+x^2}{-x^2}\\\\& = \dfrac{-x^2(-x^2+x-1)}{-x^2}\\\\& = \dfrac{-\diagup\!\!\!\!\!x^2(-x^2+x-1)}{-\diagup\!\!\!\!\!x^2}\\\\& = -x^2+x-1\end{aligned}\)

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Answer:

it is 1/3

Step-by-step explanation:

also you can type (1/9)x3 into g o o g l e

pls mark brainliest (it is the crown)

Answer:

1/3

Step-by-step explanation:

3/9 = 1/3

have a great day!

Answer:

1.

avg time = total time/ 3

for big car :-

= 4.46/ 3

= 1.48

for small car :-

= 5.14/ 3

= 1.71

2.

avg speed = total distance/ total time

for big car:-

= 2/ 4.46

= 0.45

for small car :-

= 2/ 5.14

= 0.4

The area for the larger triangle comprising of 9 small triangles is option B: 72 cm².

What are triangles?

Triangles are a particular sort of polygon in geometry that have three sides and three vertices. Three straight sides make up the two-dimensional figure shown here. An example of a 3-sided polygon is a triangle. The total of a triangle's three angles equals 180 degrees. One plane completely encloses the triangle.

The formula for area of a triangle is given as -

Area = 1/2 × base × height

The base of the smaller triangle measures 4 cm.

The height of the smaller triangle measures 4 cm.

The area of smaller triangle is -

Area(s) = 1/2 × 4 × 4

Area(s) = 1/2 × 16

Area(s) = 8 cm²

The large triangle comprises of 9 small triangles.

The area of larger triangle will be -

Area(l) = 9 × Area of small triangles

Substitute the values in the equation -

Area(l) = 9 × Area(s)

Area(l) = 9 × 8

Area(l) = 72 cm²

Therefore, the area value is 72 cm².

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The table that shows the probability distribution when one card from each stack is drawn is Table 3.

There are a total of 4 × 5 = 20 possible outcomes when one card is drawn from each stack. We can list all the possible outcomes:

Blue-blue

Blue-purple

Blue-green

Blue-purple

Blue-orange

Green-blue

Green-purple

Green-green

Green-purple

Green-orange

Red-blue

Red-purple

Red-green

Red-purple

Red-orange

Orange-blue

Orange-purple

Orange-green

Orange-purple

Orange-orange

Out of these 20 outcomes, there are 4 outcomes where the two cards match in color (blue-blue, green-green, purple-purple, and orange-orange).

Therefore, the probability distribution when one card from each stack is drawn is:

P(matching color) = 4/20

P(different colors) = 16/20

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Answer:

Step-by-step explanation:

Use a grid to show the sample space.

              blue  green red orange

blue   BB BG BR BO

purple PB PG PR PO

green GB GG GR GO

purple PB PG PR PO

orange OB OG OR 00

There are 20 possible outcomes. The probability of each color combination is the number of times that combination occurs in the grid divided by 20. Find the probability of each combination and list the probabilities in a table to show the probability distribution.

outcome   BB BG BR BO PB PG PR PO GG GR GO OR OO

probability 1 1 1 1 1 1 1 1 1 1 1 1 1

                 20 10 20 10 10 10 10 10 20 20 10 20 20

To send Kred to a Krew member, you can follow the steps provided by the Kred platform. These steps typically involve accessing your Kred account, selecting the desired recipient, specifying the amount of Kred to send, and confirming the transaction.

Sending Kred to a Krew member usually requires using the features and functionalities provided by the specific Kred platform or service. The process may vary depending on the platform, so it is recommended to refer to the official documentation or guidelines provided by the platform. Typically, you would need to log in to your Kred account, navigate to the appropriate section for sending Kred, select the intended recipient from the list of Krew members, enter the desired amount of Kred to send, review the transaction details, and confirm the transfer. The platform may also offer additional options or settings for customizing the transfer process.

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The average value of a continuous function f on the closed interval [a, b] is equal to the definite integral of f over [a, b], divided by the length of the interval [a, b].

Let f(x) be a continuous function on the interval [a, b]. The average value of f on [a, b] is given by:

AVG = (1/(b-a)) * ∫[a, b] f(x) dx

where ∫[a, b] f(x) dx denotes the definite integral of f(x) over [a, b]. The length of the interval [a, b] is given by (b-a). Therefore, the average value of f on [a, b] is the ratio of the definite integral of f over [a, b] to the length of the interval [a, b]. This formula holds for any continuous function f on [a, b].

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