PLEASE HELP ASAP 1-5 THANK YOU!!!

Answer:

Step-by-step explanation:

For Case -1

\(\Rightarrow -4x+3y=-5\quad \ldots(i)\)

\(\Rightarrow 4x-5y=3\)

\(\Rightarrow 4x=5y+3\)

Put the value of \(4x\) in equation \((i)\) we get

\(\Rightarrow -(5y+3)+3y=-5\)

\(\Rightarrow -5y+3y-3=-5\)

\(\Rightarrow 2=2y\)

\(\Rightarrow y=1\)

and thus \(4x=5(1)+3\)

\(x=\frac{8}{4}=2\)

Case-2

\(10x-6y=12\quad \ldots(i)\)

\(2x+3y=12\quad \ldots(ii)\)

Now multiply \((ii) by 5 and subtract it from (i)\)

\( 10x-6y=12\)

\( 10x+15y=+180\)

\(\cdots \cdots \cdots\)

\(-21y=-168\)

\(y=8\)

and \(=6\)

Answer:

x =5

Step-by-step explanation:

2(5x – 2) – 2x– 2 = 34

Distribute

10x-4-2x-2 = 34

Combine like terms

8x -6 = 34

Add 6 to each side

8x-6+6 = 34+6

8x = 40

Divide by 8

8x/8 = 40/8

x =5

Answer:

x=5

can you also please mark me as brainliest?

Answer:

B

Step-by-step explanation:

To find which ordered pairs are solutions to the inequalities we can simply plug in the x and y values of the ordered pairs into the inequalities and if the equation is true for both inequalities then the ordered pair is a solution to the inequalities.

For (0,0)

x = 0

y = 0

y > x + 5

Substitute 0 for y and x

0 > 0 + 5

Simplify right side

0 > 5

The inequality is not true as 5 is greater than 0, not less than. So immediately we can eliminate answer choice A.

For (5,1).

x = 5

y = 1

y > x + 5

Substitute 5 for x and 1 for y

1 > 5 + 5

Simplify right side

1 > 10

Again, the equation is not true as 1 is not greater than 10. This means that c cannot be the answer

For (3,7)

x = 3

y = 7

y > x + 5

Substitute 3 for x and y for 7

7 > 3 + 5

Simplify right side

7 > 8

7 is not greater than 8 meaning that (3,7) cannot be a solution to the inequalities

None of the ordered pairs created true equations hence the answer is B

Answer:

 -y • (6x^2 + 3xy - 4)

Step-by-step explanation:

The shape of the distribution of the number of siblings can vary depending on the specific data set.

However, if we are considering the general case, the most common shape of the distribution is likely to be unimodal and skewed to the right.

This means that the majority of individuals are likely to have fewer siblings,

and as the number of siblings increases,

the frequency of individuals with that number decreases.

The distribution may also have a long tail on the right side,

indicating a few individuals with a significantly larger number of siblings.

However, it is important to note that this is just a general observation, and in specific cases,

the distribution may be different.

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Answer:

-1/15

Step-by-step explanation:

- 2/3-(-9/15)

-2/3 + 9/15

= -1/15

After obtaining a significant F-test for repeated measures ANOVA, the null hypothesis is rejected.

In statistics, the F-test is used to compare the variances between groups or conditions in an analysis of variance (ANOVA). In the case of repeated measures ANOVA, the F-test is employed to assess the differences between means across multiple measurements or conditions within the same subjects. When the obtained F-value is significant, it indicates that there is a substantial difference among the means of the groups or conditions being compared. As a result, the null hypothesis, which assumes that there are no significant differences, is rejected.

By rejecting the null hypothesis, it is concluded that there is sufficient evidence to support the alternative hypothesis, which suggests that there are meaningful distinctions between the means. This implies that the factor or treatment being investigated has a statistically significant impact on the observed measurements or conditions. Researchers can then proceed with further analysis, such as post hoc tests or exploring the specific nature of the differences, to gain a deeper understanding of the effects and relationships within the data.

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u is in the plane spanned by the columns of A.

What is System of linear equations?

A system of equations is a collection of one or more equations with several variables. The variable mappings that satisfy all component equations—that is, the places where all of these equations intersect are the solutions of systems of equations.

Yes, u is in the plane in R3 spanned by the columns of A. The fact that the last row of the reduced matrix is [0 0 0] doesn't necessarily mean that u is not in the plane spanned by the columns of A. It only means that the system of linear equations represented by the matrix has no non-trivial solution.

In this case, u being in the plane spanned by the columns of A means that u can be written as a linear combination of the columns of A. This can be confirmed by solving the following system of linear equations:

3x - 5y + z = 0

-2x + 6y + z = 4

x + y + z = 4

Since there is a solution x = 1, y = 2, z = 1, it means that u can be written as a linear combination of the columns of A, and therefore u is in the plane spanned by the columns of A.

Hence, u is in the plane spanned by the columns of A.

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The p-value is .11 and the significance level is .05, then we fail to reject the null hypothesis.

The p-value represents the probability of obtaining the observed results, or results more extreme, assuming the null hypothesis is true. In this case, the p-value is greater than the significance level, which means that the observed results are not significant enough to reject the null hypothesis.
With a p-value of .11 and a significance level of .05, we can conclude that there is not enough evidence to reject the null hypothesis.
When comparing the p-value to the significance level (0.05), if the p-value is less than or equal to the significance level, you would reject the null hypothesis, indicating that there is a significant effect or difference.

If the p-value is greater than the significance level, you would fail to reject the null hypothesis, meaning that you cannot conclude that there is a significant effect or difference.

Hence, the p-value (0.11) is greater than the significance level (0.05), you fail to reject the null hypothesis, which means you cannot conclude that there is a significant effect or difference.

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Answer:$10

Step-by-step explanation: We are given the ratio 9:1. Meaning for every 9 dollars he spends on healthy food, he can spend a dollar on snacks. If he intends on paying 100 dollars total, how much will he spend on snacks?

He would have spent 90 dollars on healthy food, and 10 dollars on snack food. Totaling 100 dollars.

The statement ''or any set a, there exists a relation r on a such that r is both symmetric and antisymmetric'' is false. There exists no relation r on a set such that r is both symmetric and antisymmetric for all sets a.

A relation r on a set A is symmetric if (a, b) ∈ r implies (b, a) ∈ r for all a, b ∈ A. On the other hand, a relation r on a set A is antisymmetric if (a, b) ∈ r and (b, a) ∈ r implies that a = b for all a, b ∈ A.

Suppose we have a set a with more than one element, say a = {x, y}, where x ≠ y. For r to be symmetric, we must have both (x, y) and (y, x) in r. For r to be antisymmetric, we must have (x, y) and (y, x) in r implies that x = y.

However, this is a contradiction because x ≠ y, and we cannot have both (x, y) and (y, x) in r that satisfies antisymmetry. Therefore, it is not possible to find a relation r on all sets a that is both symmetric and antisymmetric. Hence, the statement is false.

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Let's say event A is the selection of four positive numbers, event B the selection of four negative numbers, and event C the selection of two positive and two negative numbers.

Since four numbers are chosen without replacement,  n(A) = 6 × 5 × 4 × 3 = 360  n(B) = 8 × 7 × 6 × 5 = 1680. In event C, four numbers are to be chosen without replacement such that two numbers are positive and two numbers are negative.

This can be done in following ways:  + + – – OR + – + – OR + – – + OR – + – + OR – – + + OR – + + –  ∴ n(C) = 6 × 5 × 8 × 7 + 6 × 8 × 5 × 7 + 6 × 8 × 7 × 5 + 8 × 6 × 7 × 5 + 6 × 5 × 8 × 7 + 8 × 6 × 5 × 7  = 6 × (8 × 7 × 6 × 5)  =10080  Here, total number of numbers = 14  ∴ n(S) = 14 × 13 × 12 × 11 = 24024

Since A, B, C are mutually exclusive events,

Required probability = P(A) + P(B) + P(C)

= n(A)/n(S) + n(B)/n(S)+ n(C)/n(S)

= 360+1680+10080/24024

= 505/1001

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Our confidence interval is (66, 102).

In statistics, a confidence interval describes the likelihood that a population parameter would fall between a set of values for a given percentage of the time. Confidence ranges that include 95% or 99% of anticipated observations are frequently used by analysts. Therefore, it can be concluded that there is a 95% probability that the true value falls within that range if a point estimate of 10.00 is produced using a statistical model with a 95% confidence interval of 9.50 - 10.50.

Now, here:

Mean, μ = 84

Standard deviation, σ = 9

It is a 95% confidence interval. We know that, within 2 standard deviations of the mean lies 95% of the population. Hence, z = 2.

Now, calculating μ - z.σ and μ + z.σ to find the intervals.

μ - z.σ  = 84 - 2x9 = 66

μ + z.σ = 84 + 2x9 = 102

Thus, our confidence interval is (66, 102).

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A scalene triangle is a triangle with three different side lengths and three different angle measurements.

All of the sides of the triangle known as the Scalene Triangle are of various lengths. It indicates that all three angles and all three sides of a scalene triangle are of different sizes. According to sides, there are three different kinds of triangles.

We'll go over its definition, formulas for its area and perimeter, and its characteristics. The sides and angles of the triangles are used to define them. A triangle is represented as a three-sided polygon in geometry and is a closed, two-dimensional plane object having three sides and three angles. There are three edges and three vertices on it.

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Answer:

\(\frac{9(7-\sqrt{2}) }{47}\)

Step-by-step explanation:

Slope-Intercept Form: The slope-intercept form of a linear equation is given by y = mx + b, where 'm' represents the slope of the line and 'b' represents the y-intercept (the point where the line intersects the y-axis).

This form is convenient for quickly identifying the slope and y-intercept of a line by inspecting the equation.

Point-Slope Form: The point-slope form of a linear equation is given by y - y₁ = m(x - x₁), where (x₁, y₁) represents a point on the line and 'm' represents the slope.

This form is useful when we have a specific point on the line and its slope, allowing us to write the equation directly without needing to determine the y-intercept.

Standard Form: The standard form of a linear equation is given by Ax + By = C, where 'A', 'B', and 'C' are constants, and 'A' and 'B' are not both zero.

This form represents a linear equation in a standard, generalized format.

It allows for easy comparison and manipulation of linear equations, and it is commonly used when solving systems of linear equations or when dealing with equations involving multiple variables.

These three forms provide different ways of representing a linear equation, each with its own advantages and applications. It is important to be familiar with all three forms to effectively work with linear equations in various contexts.

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The probable question may be:
Write the three forms of a linear equation for the following.

Slope-Intercept Form:

Point-Slope Form:

Standard Form:

Answer: 7/9

Step-by-step explanation:

The square root of 49 is 7, and the square root of 81 is 9.

Step-by-step explanation:

sorry can't remember kajsdhsiakdjdjxjnakaks

The variance of the return on a portfolio with many securities is more dependent on the covariances between the individual securities than on the variances of the individual securities.

The variance of a portfolio measures the variability or dispersion of the portfolio's returns. When a portfolio consists of multiple securities, the overall variance is influenced by the interrelationships among the returns of those individual securities.

The covariance between individual securities in a portfolio has a significant impact on the portfolio's variance.

The diversification benefits arise from the fact that covariances tend to offset each other, potentially leading to a lower overall portfolio variance compared to the sum of individual variances.

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Forty percent of the students surveyed take the bus to school, as indicated by the circle graph.

To calculate the percent of students who take the bus to school, we can use the information provided in the circle graph. There are a total of 50 students surveyed, and the graph indicates that 20 of them take the bus. To find the percent, we can first divide the number who take the bus (20) by the total number surveyed (50). This gives us 0.4, which, when multiplied by 100, is 40%. Therefore, 40% of the students surveyed take the bus to school. Hence, Forty percent of the students surveyed take the bus to school, as indicated by the circle graph.

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Answer:

Hey there!

If 1007 people attend, they will make a profit of 10070 dollars.

The play costed 3200 dollars to produce, so we have -3200+10070=7500 dollars as the final balance of the bank account.

Let me know if this helps :)

Answer:

Step-by-step explanation:

the correct answer is 6,870 it was d for me it might be different :)

-

Answer:

Step-by-step explanation:

Both pools were filled 6 inches from the top.

12 inches = 1 feet

6 inches = 6/12 = 0.5 foot

Considering Theresa's pool, it is rectangular. The formula for determining the volume if the rectangular pool is

Volume = length × width × height

Height filled is 4 - 0.5 = 3.5 feet

Volume = 30 × 15 × 3.5 = 1575 ft³

Recall, 1 cubic feet = 7.48 Us gallons

Therefore,

1800 cubic feet = 1575 × 7.48 = 11781 gallons of water

Theresa fills her pool using city water at a rate of $3.95 per 100 gallons of water. It means that the amount she paid to fill her pool is

3.95 × 11781/100 = $465.35

Considering Nancy's pool, it is cylindrical. The formula for determining the volume if the cylindrical pool is

Volume = πr²h

Diameter = 24

Radius = diameter/2 = 24/2 = 12 ft

Volume = 3.14 × 12² × 3.5 = 1582.56 ft³. Converting to gallons, it becomes

1582.56 × 7.48 = 11837.55 gallons of water.

Nancy fills her pool with a water delivery service at a rate of $200 per 6000 gallons.

It means that the amount she paid to fill her pool is

200 × 11837.55/6000 = $394.59

Therefore, Theresa paid more to fill her pool.

Answer:

C

Step-by-step explanation:

Answer:

a+7

Step-by-step explanation:

Iria made a scaled copy of the following triangle. She used a scale factor greater than 111.

What could be the length of the base of the scaled copy of the triangle?

The surface area of the cylinders are: 7794 square units, 904.9 square units,  12804 square units

recall that a cylinder is a three-dimensional solid with two parallel circular bases joined by a curved surface at a fixed distance from the center.  It is considered a prism with a circle as its base and is a combination of two circles and a rectangle

the general formula for the surface area of a cylinder is

SA = 2пr(r+h)

1  SA =2*22/7*20 (20+42)

125.7(62)

SA = 7794 square units

2) SA = 2пr(r+h)

Sssurface rea = 2*3.142*9(9+7)

Surface area = 56.6(16)

Surface area = 904.9 square units

3)   SA = 2пr(r+h)

surface area = 2*3.142*21(21+76)

Surface area = 132(97)

Surface area = 12804 square units

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The independent set in a graph is a set of vertices that contain no edges. So, no neighboring vertices are included. The max independent set problem is to get an independent set of maximum size in graph G.

The solution for this question is discussed below:

a) The integer linear program for the max independent set problem is as follows:

maximize ∑x_i Subject to: x_i+x_j ≤ 1 {i,j} ∈ E;x_i ∈ {0, 1} ∀i. The variable x_i can represent whether the ith vertex is in the independent set. It can take on two values, either 0 or 1.

b) The LP relaxation for the max independent set problem is as follows:

Maximize ∑x_iSubject to:

xi+xj ≤ 1 ∀ {i, j} ∈ E;xi ≥ 0 ∀i. The variable xi can take on fractional values in the LP relaxation.

c) The family of graphs is as follows:

Consider a family of graphs G = (V, E) defined as follows. The vertex set V has n = 2^k vertices, where k is a positive integer. The set of edges E is defined as {uv:u, v ∈ {0, 1}^k and u≠v and u, v differ in precisely one coordinate}. It can be shown that the size of the max independent set is n/2. Using LP, the value can be determined. LP provides a value of approximately n/4. Therefore, the ratio LP-OPT/OPT is at least c/4. Therefore, the ratio is in for a constant c>0.

d) The size of a max-independent set is equivalent to the number of vertices minus the minimum vertex cover size.

e) The 2-approximation algorithm for vertex cover implies a 2-approximation algorithm for the max independent set.

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Answer:

125 km in 100 minutes

Step-by-step explanation:

In order to solve this problem, you have to divide 7.5 by six to find out how fast it goes per minute. BY doing this you are left with 1.25. You then multiply 1.25 by 100 to find out how far it goes in 100 minutes.

Hope this helped :)

An annual payment is found approximately $617.34. The correct option is e.. $617.34.

To find the size of your payments, you can use the formula for calculating the equal installments on a loan.

First, calculate the annual payment by dividing the borrowed amount ($2,000) by the present value factor of an annuity due with 4 periods at a 9% interest rate.

Using a financial calculator or spreadsheet, the present value factor of an annuity due with 4 periods at 9% interest rate is 3.2403.

Dividing $2,000 by 3.2403 gives us an annual payment of approximately $617.34.
Therefore, the correct answer is e. $617.34.

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Answer:

since you answered the other 2 already the last one is 57 pounds :p

Step-by-step explanation:

57 pounds is 95 percent of the limit.