5x+4=2(x+2)
please help me i tried it and i got it wrong I got 2/5

Explicación paso a paso:

Workdone = Fuerza * distancia movida en la dirección de la fuerza

Dado

Fuerza f = 40N

Distancia = 6 m

El trabajo realizado por la fuerza F es:

Trabajo hecho = 40 * 6

Trabajo terminado = 240 Nm

El trabajo realizado por la fuerza de la gravedad es el trabajo realizado por el cuerpo de 2 kg:

W = mg

W = 2 * 10

W = 20N

Trabajo realizado = 20 * 6

Trabajo terminado = 120 Nm

The probability that the average ACT score of an SRS of 16 students is 27 or higher can be found using the standard normal distribution formula.

First, we need to find the z-score for an average of 27. The z-score is calculated as:

z = (x - μ) / (σ / √n)

Where x is the sample mean (27), μ is the population mean (21.1), σ is the population standard deviation (5.1), and n is the sample size (16).

Plugging in the values, we get:

z = (27 - 21.1) / (5.1 / √16) = 4.9 / (5.1 / 4) = 3.84

Now, we can use the standard normal distribution table to find the probability that the z-score is 3.84 or higher. The table shows that the probability is 0.0001.

Therefore, the probability that the average ACT score of an SRS of 16 students is 27 or higher is 0.0001.

know more about probability here

https://brainly.com/question/30034780#

#SPJ11

Answer:

SA: 456

V: 408

Step-by-step explanation:

To find the volume of this prism, you first need to find the area of the triangular base. The base has dimensions 6 by 8, and since it's a triangle, the area of the base is 6*8/2=24. Multiplying this by the length of the prism, you get a volume of 24*17=408. For the surface area, you need to find and add together the areas of all of the surfaces. We have already determined that the area of the two triangular bases are 24. The rectangle formed by the leg with length 6 has area 6*17=102, the one with length 8 has area 136, and the hypotenuse has area 170. Adding all of this together, you get a surface area of 24+24+102+136+170=456 square centimeters. Hope this helps!

Answer:

y intercept= 12.8

Step-by-step explanation:

to find the y-intercept, substitute x=0

y=5.45+1.05(0+7)

y=1.05(7)=7.35

7.35+5.45=12.8

a) a minimum of 3 doctors required so that at least 70% of the arriving patients.

b) a minimum of 7 doctors are required so that the average time a patient waits for treatment is no more than 30 minutes

a) Minimum number of doctors required so that at least 70% of the arriving patients can receive treatment immediately

Formula used:

The number of patients arriving in an hour: λ = 9

Treatment time: μ = 6 minutes

Per the Little’s law, the waiting time is proportional to the average number of patients present at any given time.

λ/μ is the average number of patients present at any given time.

If there are k servers present in the ER, the number of patients they can serve is given by kμ.

Hence, the percentage of patients who have to wait is given by:

Percentage of patients waiting = λ / (kμ + λ)

Percentage of patients receiving treatment immediately = kμ / (kμ + λ)

Thus, we can now form an equation as:

kμ / (kμ + λ) ≥ 0.7

=> kμ / (kμ + 9) ≥ 0.7

=> k ≥ 3 doctors (Approximately)

Therefore, a minimum of 3 doctors required so that at least 70% of the arriving patients can receive treatment immediately.

b) Minimum number of doctors required so that the average time a patient waits for treatment is no more than 30 minutes as advertised

The percentage of patients who have to wait = λ / (kμ + λ)

Again, let us use the Little's law to find the average time patients spend waiting in the queue, which is equal to

λ / (k(μ - λ/k)).

We are given that the waiting time should not be more than 30 minutes, which can be converted to 0.5 hours.

Thus:

λ / (k(μ - λ/k)) ≤ 0.5

=> 9 / (k(0.1 - 1/k)) ≤ 0.5

=> 18 ≤ k(0.1 - 1/k)

=> 0.1k - 1 ≤ 18/k

=> 0.1k² - k - 18 ≥ 0

Using the quadratic formula, the solution is k = 6.66, which is rounded up to 7, and k = 2.5, which is rounded up to 3.

Therefore, a minimum of 7 doctors are required so that the average time a patient waits for treatment is no more than 30 minutes as advertised and a minimum of 3 doctors are required so that the average time a patient waits for treatment is no more than 15 minutes.

Know more about the Little's law

https://brainly.com/question/25827453

#SPJ11

Answer: -34

Step-by-step explanation:

Step 1: 7x2=14

Step 2: 14+3=17

Step 3: 7-9=-2

Step 4: 17x-2= -34

Answer:

10.71 % of the time

Step-by-step explanation:

3! = 6

6 / 56 = 0.1071

to percent it becomes 10.71

Answer: Here’s some help

Step-by-step explanation:

Answer:

Find the radius then square it, and multiply by pie.
r = 3
π = 3.14159
a = πr2
a = π(3)2
a = π(9)
a ≈ 28.27

Step-by-step explanation:

You just need to find the diameter of a circle, then halve it and plug in the information to the formula above.

The correct option that indicates how Christa sliced the rectangular pyramid is the second option.

Christa sliced the pyramid perpendicular to its base through two edges.

A rectangular pyramid is a pyramid with a rectangular base and four triangular faces.

The height of the cross section indicates that the location where Christa sliced the shape is lower than the apex of the pyramid.

The trapezoid shape of the cross section of the pyramid indicates that the top and base of the cross section are parallel, indicating that Christa sliced the pyramid parallel to a side of the base of the pyramid, such that it intersects two of the edges of the pyramid

The correct option is therefore the second option;

Christa sliced the pyramid perpendicular to its base through two edges

Learn more on pyramids here: https://brainly.com/question/16098828

#SPJ1

The correct answer for this question is 70

Answer:

Step-by-step explanation:

70

Answer:

y = negative 1 over 2 x + 11

took the test and its the correct answer

Step-by-step explanation:

Answer:

y=3 over 4.x+4

Step-by-step explanation:

The value of "k" for which the determinant of the given matrix is zero is 2.5

The given problem asks to find the values of "k" for which the determinant of the given matrix is zero.

The given matrix can be represented as:

| 6 0 0 |
| 7 2 0 |
| 0 2 k+7 |

The determinant of the matrix is calculated as:

6 * (2(k+7)) - 0 - 0 - 7 * (2) * 0 + 0 - 0 = 12k - 30

To find the values of "k" for which the determinant is zero, we need to solve the equation:

12k - 30 = 0

Simplifying the equation, we get:

k = 2.5

Therefore, the value of "k" for which the determinant is zero is 2.5.

In general, the determinant of a matrix is a scalar value that represents some important properties of the matrix, such as invertibility and eigenvalues. If the determinant of a matrix is zero, it means that the matrix is singular and does not have an inverse. In the given problem, we have calculated the determinant of the matrix and found the values of "k" for which the determinant is zero. This helps us understand the properties of the matrix and the possible solutions to any equations involving the matrix.

To learn more about determinants of matrices, visit:
https://brainly.com/question/22209293

#SPJ11

Create a frequency distribution with 10 intervals for 60 cases that range in score from 4 to 84, each interval will have an approximate width of 8 units.

To determine the width of each interval in a frequency distribution, we need to calculate the range of the data and divide it by the desired number of intervals.

Given that the scores range from 4 to 84, the range of the data is 84 - 4 = 80 units.

To distribute these 80 units into 10 intervals, we divide the range by the number of intervals:

Interval width = Range / Number of Intervals

Interval width = 80 / 10 = 8 units

Therefore, each interval in the frequency distribution will have an approximate width of 8 units.

In practice, it's important to note that the width of intervals can be adjusted slightly depending on the specific requirements or characteristics of the data. It's also worth considering whether the interval width provides an appropriate level of detail and captures the variation in the data effectively.

Learn more about frequency distribution here:

https://brainly.com/question/30371143

#SPJ11

In summary, when the two new children (ages four and twelve) are added to the existing group, the mean age increases from 8 to 8, and the standard deviation changes from its original value to approximately 3.74.

To determine the effect of adding two children (ages four and twelve) to the existing group of five children (ages five, six, eight, nine, and twelve) on the mean and standard deviation of ages, we need to calculate the new values.

Let's calculate the mean first:

Calculate the sum of the ages of the initial five children:

5 + 6 + 8 + 9 + 12 = 40

Add the ages of the two new children:

40 + 4 + 12 = 56

Calculate the new mean by dividing the sum by the total number of children (5 initial + 2 new):

56 / 7 = 8

Therefore, the new mean age is 8.

Now let's calculate the standard deviation:

Calculate the squared difference between each age and the mean for the initial five children:

\((5 - 8)^2 + (6 - 8)^2 + (8 - 8)^2 + (9 - 8)^2 + (12 - 8)^2 = 54\)

Calculate the squared difference between each new age and the new mean:

\((4 - 8)^2 + (12 - 8)^2 = 80\)

Calculate the sum of the squared differences for the initial five children and the new children:

54 + 80 = 134

Divide the sum of squared differences by the total number of children (5 initial + 2 new) and take the square root:

√(134 / 7) ≈ 3.74

Therefore, the new standard deviation is approximately 3.74.

To know more about mean,

https://brainly.com/question/15744601

#SPJ11

The amount of money in sales that Nolvia needs to earn a salary that exceeds $40,000 is greater than or equal to $19,000.

Given that:-

Fixed salary of Nolvia = $21,000

Commission tax that Nolvia gets = 4 %

Linear equation of Nolvia's salary and commission tax = 21000 + 0.04x

Where,

s represents her salary

x represents total sales

We have to find the amount of money in sales that Nolvia needs to earn a salary that exceeds $40,000.

The amount of money in sales that Nolvia needs to earn a salary that exceeds $40,000 = 40000 - 21000 ≥ $ 19,000

To learn more about Linear equation, here:-

https://brainly.com/question/11897796

#SPJ4

Greetings from Brasil...

Just take the cross product of the vectors EF and EH. The result will be a vector n. This vector (n) will help in the equation of the plane

vector EF = point F - point E

vector EH = point H - point E

check the attachment

according to the example in the annex, we notice that the points E, F and G are in the plane whose equation will be:

π : 6X + 9Y + 5Z + 1 = 0

Answer:

Finding the dilation's center point is the first step in determining the scale factor. Next, we measure the distances between the center point and various points on the preimage and the image. We may determine the scale factor by dividing these distances by 2.

Step-by-step explanation:

Answer:6

Step-by-step explanation: The rules of exponential says (a^x)^y=a^xy.

Therefore you will multiply 1/4 with 4 to get an exponent of 1. So the answer is 6^1 which is also written as 6

Answer: 41$

Step-by-step explanation:

This is because 5x6=30 (To find how much money is made)

then 11+30=41 (add both amounts)

Answer:

1. 49

2. 35

3. 4

4.  140

5. 189

Step-by-step explanation:

1. Face A is a square with a height of 7 cm, so the length and width have to be 7 too. 7*7=49.

2. area=base*height/2. The base is 7, the height is 10, their product is 70. 70/2=35.

3. In the net, 4 traingles labeled B are present

4. area of b triangles*number of b triangles: 35*4=140

5. square+b triangles=surface area. 49+140=189.

Answer:

below

Step-by-step explanation:

1. Area for Face A (the square)

Formula: A=a^2

A = Area, a = side

Fill in:

A = 7^2

Solve:

7 ^2, aka 7 x 7 = 49

2. Area for Face B (the flat triangles)

Formula: A = 1/2 × b × h

b = base, h = height

Fill in:

A = 1/2 × 7 × 10

Solve:

(Multiplying by 1/2 is the same as dividing by 2)

A = 1/2 x 7 x 10
7 × 10 = 70

divide by 2

70/2 = 35

Now we count how many Face B triangles there are, and add the area of each one together:

# of Face B Triangles: 4

multiply it by 35, or just add 35 4 times: 140

3. Total Surface Area for Pyramid:

Base Surface Area = 7^2 = 49

Lateral Surface Area = 2 × 7 × √(7/2)^2 + 10^2 =148.32734070292

Total Surface Area = 197.32734070292

Answer:

x^2+6x+8

Step-by-step explanation:

x x x=x^2

x x2= 2x

4 x x=4x

4 x 2= 8

x^2+2x+4x+8

x^2+6x+8

Answer:

Step-by-step explanation:

Answer:

92.8

Step-by-step explanation:

Answer:

12

Step-by-step explanation:

Answer:

I duno

..............................................

Answer:

Our calculator limits your interest deduction to the interest payment that would be paid on a $1,000,000 mortgage. Interest rate: Annual interest rate for this

Step-by-step explanation:

Given vector field, F(x, y, z) = y cos (xy) i + x cos (xy) j – sin z k To calculate the curl of F, we need to take the curl of each component and subtract as follows,∇ × F = ( ∂Q/∂y - ∂P/∂z ) i + ( ∂P/∂z - ∂R/∂x ) j + ( ∂R/∂x - ∂Q/∂y ) k...where P = y cos(xy), Q = x cos(xy), R = -sin(z)

Now we calculate the partial derivatives as follows,

∂P/∂z = 0, ∂Q/∂y = cos(xy) - xy sin(xy), ∂R/∂x = 0...

and,

∂P/∂y = cos(xy) - xy sin(xy), ∂Q/∂z = 0, ∂R/∂y = 0

Therefore,

∇ × F = (cos(xy) - xy sin(xy)) i - sin(z)j

The curl of F is given by:

(cos(xy) - xy sin(xy)) i - sin(z)j.

To state whether F is conservative, we need to determine if it is a conservative field or not. This means that the curl of F should be zero for it to be conservative. The curl of F is not equal to zero. Hence, the vector field F is not conservative. Let C be the curve joining the origin (0,1,-1) to the point with coordinates (1, 2V2,2) defined by the following parametric curve:

r(t) = n* i + t}j + tcos atk, 15t52.

The curve C is defined as follows,r(t) = ni + tj + tk cos(at), 0 ≤ t ≤ 1Given vector field, F(x, y, z) = y cos(xy) i + x cos(xy)j – sin zk Using the curve parameterization, we get the line integral as follows,∫CF.dr = ∫10 F(r(t)).r'(t)dt...where r'(t) is the derivative of r(t) with respect to t

= ∫10 [(t cos(at))(cos(n t)) i + (n cos(nt))(cos(nt)) j + (-sin(tk cos(at)))(a sin(at)) k] . [i + j + a tk sin(at)] dt

= ∫10 [(t cos(at))(cos(n t)) + (n cos(nt))(cos(nt)) + (-a t sin(at) cos(tk))(a sin(at))] dt

= ∫10 [(t cos(at))(cos(n t)) + (n cos(nt))(cos(nt)) - a^2 (t/2) (sin(2at))] dt

= [sin(at) sin(nt) - (a/2) t^2 cos(2at)]0^1

= sin(a) sin(n) - (a/2) cos(2a)

The vector field F(x, y, z) = y cos(xy) i + x cos(xy)j – sin zk is given. Firstly, we need to calculate the curl of F. This involves taking the curl of each component of F and subtracting. After calculating the partial derivatives of each component, we get the curl of F as (cos(xy) - xy sin(xy)) i - sin(z)j. Next, we need to determine whether F is conservative. A conservative field has a curl equal to zero. As the curl of F is not equal to zero, it is not a conservative field. In the second part of the problem, we have to calculate the scalar line integral of the vector field F. dr along the curve C joining the origin to the point with coordinates (1, 2V2, 2). We use the curve parameterization to calculate the line integral. After simplifying the expression, we get the answer as sin(a) sin(n) - (a/2) cos(2a).

The curl of the given vector field F(x, y, z) = y cos(xy) i + x cos(xy)j – sin zk is (cos(xy) - xy sin(xy)) i - sin(z)j. F is not conservative as its curl is not zero. The scalar line integral of the vector field F along the curve C joining the origin to the point with coordinates (1, 2V2,2) is sin(a) sin(n) - (a/2) cos(2a).

To learn more about curve parameterization visit:

brainly.com/question/12982907

#SPJ11

From the given bar graph, the average number of students who are afraid of spider and snakes is of 15.

A bar graph shows the absolute frequency of each observation in the data-set, that is, the number of times that each variable is observed.

Hence, in the context of this problem, from the bar graph on the image, the number of students that are afraid of each thing are:

The average between two values is given by the sum of the two values divided by two.

Hence, the average number of students who are afraid of spiders and snakes is calculated as follows:

M = (18 + 12)/2 = 30/2 = 15.

The bar graph is missing and is given by the image at the end of the answer.

More can be learned about bar graphs at https://brainly.com/question/24741444

#SPJ1

Answer:

15

Step-by-step explanation:

got it right on quiz

The algebraic expression for f(x), the total cost of the data plan when x gigabytes are downloaded, is f(x) = $45 + $0.40x. The algebraic expression for g(x), the total cost of the convenience fee for a payment of $x, is g(x) = $2 + 0.03x. Evaluating f(g(10)) means finding the total cost of the data plan when the convenience fee is calculated for a payment of $10. Evaluating g(f(10))

means finding

the total cost of the convenience fee when the data plan cost is calculated for downloading 10 gigabytes. The average rate of change of the convenience fee from 5 to 10 gigabytes can be found by evaluating the difference in g(x) for x = 10 and x = 5, and dividing it by the difference in x values.

The total cost of the data plan, f(x), is composed of a fixed monthly cost of $45 and an additional cost of $0.40 per gigabyte of data downloaded. This can be represented algebraically as f(x) = $45 + $0.40x, where x represents the number of gigabytes downloaded.

The convenience fee, g(x), consists of a

fixed cost

of $2 per payment, plus 3% of the payment amount. The algebraic expression for g(x) is g(x) = $2 + 0.03x, where x represents the payment amount.

To find f(g(10)), we substitute 10 into g(x), obtaining g(10) = $2 + 0.03(10) = $2.30. Then, we substitute g(10) into f(x), yielding f(g(10)) = $45 + $0.40($2.30) = $45 + $0.92 = $45.92. This means that the total cost of the data plan when the convenience fee is calculated for a payment of $10 is $45.92.

To find g(f(10)), we substitute 10 into f(x), obtaining f(10) = $45 + $0.40(10) = $45 + $4 = $49. Then, we substitute f(10) into g(x), yielding g(f(10)) = $2 + 0.03($49) = $2 + $1.47 = $3.47. This means that the total cost of the convenience fee when the data plan cost is calculated for downloading 10 gigabytes is $3.47.

To learn more about

algebraic expression

brainly.com/question/28884894

#SPJ11

Answer:

hola. amiga como estas

Answer:

No, the given is not a function.

Step-by-step explanation:

I am confused if the last half of the numbers belong to a y value or not, but the answer is the same regardless.

If all numbers provided are "x", then no; the given does not represent a function. This is because the "x" value has duplicates, which indicates a non function.

Even if the last 5 numbers belong to f(x), or "y", the given is still not a function. the duplicated number is "9", and the 9's would be an x value regardless of the form of the given information.