2.8 -3x =12.1 −6x what's x

Phase 5: The system of implementation is conversion.

Option B is the correct answer.

We have,

Phase 5 of the system development life cycle is commonly referred to as "Conversion" or "Systems Implementation."

During this phase,

The focus shifts from planning and designing the system to actually implementing it.

This phase involves the conversion of the old system to the new system, which includes activities such as data conversion, software installation, hardware setup, user training, and system testing.

The term "Conversion" is used because it signifies the transition from the old system to the new system.

It involves migrating data, processes, and operations from the existing system to the new system.

This phase ensures that the newly developed system is successfully integrated into the organization and becomes fully operational.

Thus,

Phase 5: The system of implementation is conversion.

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Answer:

Step-by-step explanation:(a)

1.65p+1.36j=118.17 and p+j=79

We can say p=79-j and sub this value in first equation

1.65(79-j)+1.36j=118.17

130.35-1.65j+1.36j=118.17

-0.29=-12.18

j=42, p=79-j, p=79-42=37

(b)

1.65(37)=61.05 and 1.36(42)=57.12

Sanchez class earned more selling pies.

(c)

61.05-57.12=3.93

So Sanchez class made $3.93 more than Kelley class.

Some one already answered this, heres the link to the answer:

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Multiplying the first equation by r and substituting the second equation in place of φ'' , we get:rφ'' - Aφ'' - 2φ' + Aφ = 0So, the system of ordinary differential equations corresponding to the PDE is (a) r"-2A=0 and r" + Ar = 0.

The system of ordinary differential equations corresponding to the PDE is (a) r"-2A

=0 and r" + Ar

= 0.Given:PDE:

Ar^2 u_xx + 2ru_x u_x + (Au + u^2 ) u_x

= 0

For any function u(x,t), where A is a constant and u_x and u_xx are its partial derivatives with respect to x. We will convert this PDE to a system of ordinary differential equations using r

=x and u

=phi (x).Differentiating u with respect to t and x, we getu_t

= phi' (x) r_t. u_x

= phi' (x) r.Using chain rule, differentiate u_xx with respect to x. We get u_xx

= (phi'' (x) r^2 + phi' (x) r) / r^2

Substituting in the given PDE, we getφ'' + (2/r) φ' + A φ' - (φ^2 /r^2 )φ' + (φ^2 φ' /r)

= 0rφ'' + 2φ' - Aφ

= 0

.Multiplying the first equation by r and substituting the second equation in place of φ'' , we get:

rφ'' - Aφ'' - 2φ' + Aφ

= 0So, the system of ordinary differential equations corresponding to the PDE is (a) r"-2A

=0 and r" + Ar

= 0.

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Answer:

23 students

Step-by-step explanation:

In a group of students , 12 read maths, 15 read statistics , 11 read physics, 4 read maths only , 7 read statistics only, 3 read statistics and physics only and 1 read maths and statistics only.

Those that read maths only = 4, Those that read statistic only =7, Those that read statistics and physics only = 3, those that read maths and statistics only = 1.

Therefore those that read all three subjects = 15 - 7 - 3 - 1 = 4

Those that read maths and physics only = 12 - 4 - 4 - 1 = 3

Those that read physics only = 11 - 3 - 4 - 3 = 1

The number students = 4 + 7 + 3 + 1 + 4 + 3 + 1 = 23 students

Answer:I think its 0.7

Step-by-step explanation:

hope that helps but I am not to sure :((  

2/7x + 1/10 = 1 - x

is 0.7

Answer:

y = x - 6

Step-by-step explanation:

the equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

calculate m using the slope formula

m = \(\frac{y_{2}-y_{1} }{x_{2}-x_{1} }\)

with (x₁, y₁ ) = (- 1, - 7 ) and (x₂, y₂ ) = (7, 1 )

m = \(\frac{1-(-7)}{7-(-1)}\) = \(\frac{1+7}{7+1}\) = \(\frac{8}{8}\) = 1 , then

y = x + c ← is the partial equation

to find c substitute either of the 2 points into the partial equation

using (7, 1 ) , then

1 = 7 + c ⇒ c = 1 - 7 = - 6

y = x - 6 ← equation of line

The value of function f'(-4) = 3/16.

To find f'(-4), we can use the quotient rule.

That is,

f'(x) = f(x)/g(x)
f'(-4) = (f(-4)*g'(-4) - g(-4)*f'(-4))/(g(-4))^2

Substituting in the given values, we get,
f'(-4) = (9*6 - 8*6)/(8)^2
f'(-4) = 3/16

Therefore, the value of function f'(-4) = 3/16.

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The value of function f'(-4) = 3/16.

To find f'(-4), we can use the quotient rule.

That is,

f'(x) = f(x)/g(x)
f'(-4) = (f(-4)*g'(-4) - g(-4)*f'(-4))/(g(-4))^2

Substituting in the given values, we get,
f'(-4) = (9*6 - 8*6)/(8)^2
f'(-4) = 3/16

Therefore, the value of function f'(-4) = 3/16.

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proper scientific notation: 3.6 x 10⁻⁵

standard form: 0.000036

Answer:

5 ml

Step-by-step explanation:

1250 lb * ( 1 ml / 250 lb ) = 5 ml

Answer:

(0,5)

(2,1)

(4,-3)

Plz mark me brainliest. have a great day!

Answer:

I think the answer is B, 4 1/5!

Answer: B - 4 1/5

Step-by-step explanation:

7 x 3/5 = 21/5

21/5 = 4.2

and then you just plug your answers into a calculator to see which one = 4.2.

Therefore, the present value of the perpetuity that pays $1,800 per year forever, assuming a 5% interest rate, is $36,000. To find the present value of a perpetuity that pays $1,800 per year forever, we can use the formula:
Present Value = Cash Flow / Interest Rate

In this case, the cash flow is $1,800 and the interest rate is 5%. Plugging these values into the formula, we get:
Present Value = $1,800 / 0.05. Simplifying this equation, we find that:
Present Value = $36,000

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Answer:

the difference is 25.4 degrees.

Step-by-step explanation:

Answer:

2.92mph Assuming 1 2 hours is 1.2 hours

Step-by-step explanation:

Dividing 1.2 hours by itself = 1 hour

Therefore, by dividing 3.5 by 1.2, you will get the mph that he is walking.

3.5/1.2=2.9166 or 2.92mph.

The correct answer is (b) divide the sum of the cross-products of Z scores by the sample size.

When calculating the correlation coefficient, also known as Pearson's correlation coefficient, the last step involves dividing the sum of the cross-products of Z scores by the sample size. The correlation coefficient measures the strength and direction of the linear relationship between two variables.

To calculate the correlation coefficient, we follow these steps:

Standardize the variables: Convert the raw scores of each variable into Z-scores. The Z-score represents the number of standard deviations a particular score is from the mean. This step is done to put both variables on the same scale and make them comparable.

Calculate the cross-products: Multiply the Z-scores of the corresponding pairs of observations. This step gives us the cross-products of Z-scores for each pair of observations.

Sum the cross-products: Add up all the cross-products of Z-scores.

Divide by the sample size: Divide the sum of the cross-products of Z-scores by the sample size. The sample size represents the number of paired observations used in the analysis.

By dividing the sum of the cross-products by the sample size, we obtain the covariance of the variables. The covariance measures the extent to which the variables vary together. However, the covariance itself is not sufficient to determine the strength and direction of the relationship.

The final step involves dividing the covariance by the product of the standard deviations of the variables. This step normalizes the covariance and results in the correlation coefficient, which is a value between -1 and 1. The correlation coefficient indicates the strength and direction of the linear relationship between the variables. A positive correlation coefficient indicates a positive linear relationship, a negative correlation coefficient indicates a negative linear relationship, and a correlation coefficient close to zero indicates a weak or no linear relationship.

Therefore, the last step in calculating the correlation coefficient is to divide the sum of the cross-products of Z-scores by the sample size.

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a)The probability that both A and B occur is 0.72 and b)A and B are not mutually exclusive and c)A and B are independent.

a) We have given that events a and b are independent and =pa0.8 and =pb0.9. Now, to find PA and B, we use the formula, P(A and B) = P(A) x P(B).P(A and B) = P(A) x P(B) = (0.8) x (0.9) = 0.72.

Hence, the probability that both A and B occur is 0.72.

(b) A and B cannot be mutually exclusive because if they were, the probability of their intersection would be 0. However, as we have already calculated, P(A and B) = 0.72.

Therefore, A and B are not mutually exclusive.

(c) As we have already mentioned, the events A and B are independent, which means that the occurrence of one event does not affect the probability of the other event.

We can also verify this using the formula, P(A and B) = P(A) x P(B). If we substitute the given probabilities in this formula, we get:

P(A and B) = P(A) x P(B)(0.8) x (0.9) = 0.72

This is the same value we got for P(A and B) earlier. Hence, we can say that A and B are independent.

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Kieran membeli mobil seharga $8000 Tahun berikutnya dia menjual mobil seharga $7500

Loss :

= $ 8.000 – $7.500

= $ 500

then Loss is $500

#FromIndonesia

The given problem is a 0-1 integer programming problem, which involves finding the maximum value of a linear objective function subject to a set of linear constraints, with the additional requirement that the decision variables must take binary values (0 or 1).

To solve this problem by implicit enumeration, we systematically evaluate all possible combinations of values for the decision variables and check if they satisfy the constraints. The objective function is then evaluated for each feasible solution, and the maximum value is determined.

In this case, there are three decision variables: x1, x2, and x3. Each variable can take a value of either 0 or 1. We need to evaluate the objective function 2x1 - x2 - x3 for each feasible solution that satisfies the given constraints.

By systematically evaluating all possible combinations, checking the feasibility of each solution, and calculating the objective function, we can determine the solution that maximizes the objective function value.

The explanation of the solution process, including the enumeration of feasible solutions and the calculation of the objective function, can be done using a table or a step-by-step analysis of each combination.

This process would involve substituting the values of the decision variables into the constraints and evaluating the objective function. The maximum value obtained from the feasible solutions will be the optimal solution to the problem.

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Answer:

fog=f[g(x)]

=f[-x]

=-2x+4

Answer:b

Step-by-step explanation:

The equation represents the total cost of turkey and amount is y= 3.25x.

We have,

The turkey costs $3. 25 per pound.

let x be the amount in pounds and y be the total cost in dollar.

Then, the relation between x and y

Total cost = 3.25 (amount in  poind)

y = 3.25 x

Thus, the required equation is y= 3.25x.

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The sequence is -2 1/4, - 1.2, -0.7, 2 1/2, 2 3/4.

A sequence is an enumerated collection of objects in which repetitions are allowed and order matters.

We have given number as

-2 1/4 = -2.25

-1.2

-0.7

2.5

2.75

So, the arrangement from least to greatest is -2 1/4, - 1.2, -0.7, 2 1/2, 2 3/4.

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The solution of linear equations y=x-2 and y=-2x+7 is (3,1).

The given linear equation is,

y = x - 2      (equation 1)

y = -2x + 7   (equation 2)

To find the solution for this linear equation, we used the substitution method.

Solve equation 2 for value y,

y = -2x + 7

Put this value of y in equation 1

-2x + 7 = x - 2

-2x -x = - 2 - 7

-3x = -9

dividing into both sides by -3

we get, x = 3.

Put x=3 in equation 1 we get,

y = 3-2 =1

Therefore the solution of the given linear equation is (3, 1).

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Complete question:

Find the solution of the given linear equation.

y=x-2

y=-2x+7

The equilibrium level of income (Y), interest rate (i), consumption (C), investments (I), and budget surplus can be calculated using the given equations and information. When G increases by 100, the new values for investments and budget surplus can be determined. The crowding out effect resulting from the increase in G can also be evaluated. Additionally, if the increase in G is accompanied by an increase in M/P by 100, the equilibrium level of Y and r, as well as the crowding out effect, can be determined and explained.

To calculate the equilibrium level of income (Y), we set the total income (Y) equal to total expenditures (C + I + G), solve the equation, and find the value of Y that satisfies it. Similarly, the equilibrium interest rate (i) can be determined by equating the demand for money (L) with the money supply (M/P). Consumption (C), investments (I), and budget surplus can be calculated using the respective equations provided.

When G increases by 100, we can recalculate the new values for investments and budget surplus by substituting the updated value of G into the equation. The crowding out effect can be assessed by comparing the initial and new values of investments.

If the increase in G is accompanied by an increase in M/P by 100, the equilibrium level of Y and r can be calculated by simultaneously solving the equations for total income (Y) and the interest rate (i). The crowding out effect in this case refers to the reduction in investments resulting from the increase in government spending (G) and its impact on the interest rate (r), which influences private sector investment decisions.

Overall, by analyzing the given equations and their relationships, we can determine the equilibrium levels of various economic variables, evaluate the effects of changes in government spending, and understand the concept of crowding out.

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Answer:

Step-by-step explanation:

Givens

Area = 59.5 in^2

Base =  7 inches

height = h

Solution

Area = Base * height                 Substitute what you know in the formula

59.5 = 7 * h                                 Divide both sides by 7

59.5/7 = 7h / 7                            

h = 8.5

Answer height = 8.5

Answer:

Answer B is correct

Step-by-step explanation:

The formula to find the area of a rectangle is :

Area = Base × Height

Given that,

Area ⇒ 59.5 in²

Base ⇒ 7 in

Height ⇒?

Let the height of the rectangle be x.

First, let us make an expression to find the value of h.

Area = Base × Height

59.5 = 7 × x

And now let us solve for x.

59.5 = 7h

Divide both sides by 7.

x = 8.5 in

Answer:

1034

Step-by-step explanation:

Answer:

1034

Step-by-step explanation:

In the given scenario, where there is one infinitely long track and overtaking is impossible, the initial situation consists of three equally spaced trains, each moving at a different speed. The trains have the capability to link up when one catches up to the other, resulting in a single train moving at the speed of the slower train.

As the trains move, they will eventually reach a configuration where the fastest train catches up to the middle train. At this point, the fastest train will link up with the middle train, forming a single train moving at the speed of the middle train. The remaining train, which was initially the slowest, continues to move independently at its original speed. Over time, the process continues as the new single train formed by the fastest and middle trains catches up to the remaining train. Once again, they link up, forming a single train moving at the speed of the remaining train. This process repeats until all the trains eventually merge into a single train moving at the speed of the initially slowest train. In summary, on this strange railway line, where trains can only link up and cannot overtake, the initial configuration of three equally spaced trains results in a sequence of mergers where the trains progressively combine to form a single train moving at the speed of the initially slowest train.

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Answer:

ans is d

hope it helps you