I NEED HELPP PLEASE YALL

Answer:

7. A

8. D

9. C

10. D

13. D

Step-by-step explanation:

Hope that helps :)

Answer:

x=-8

Step-by-step explanation:

Multiply -4 by each number in the parenthesis ( distributive property )

Add x to -8x ( -7x )

Add 44 to 12 ( 56 )

Divide 56 and -7

 You should get x=-8

The graph of the line y = 4x + 3 is shown below.

The coordinates in a graph indicate the location of a point with respect to the x-axis and y-axis.

The coordinates in a graph show the relationship between the information plotted on the given x-axis and y-axis.

We have,

y = 4x + 3

When x = 0, y = 3

When x = 1, y = 4 + 3 = 7

When x = 2, y = 11

Similarly for negative x values, we get,

x = -1, y = -4 + 3 = -1

x = -2, y = -8 + 3 = -5

So on......

So we must get the following coordinates:

(-1, -1), (-2, -5), (0, 3), (1, 7), (2, 11),, ........

Thus,

The graph is shown below.

Learn more about coordinates here:

https://brainly.com/question/13118993

#SPJ1

Answer:

x = 2

Step-by-step explanation:

OK so lets do it together.

2x = -2x + 8

Subtract 8 from both sides

2x - 8 = -2x

Add 2x to both sides

4x - 8 = 0

Add 8 to both sides

4x = 8

Divide each side by 4

x = 2

Check:

4 = -4 + 8

4 = 4

correct

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

Answer:

Total area of Dartboard = 8×12 = 96

Area of blue squares = 3 × 2² = 12

Probability( hitting blue squares )= 12/96 = 1/8

Answer: To write the equation of the line that is parallel to the graph of y = x – 4 and passes through the point (-2, 3), we can use the fact that parallel lines have the same slope.

The slope of y = x – 4 is 1, since the coefficient of x is 1.

So, we can write the equation of the line in the slope-intercept form y = mx + b, where m = 1 and b is the y-intercept. To find the y-intercept, we can substitute the point (-2, 3) into the equation:

y = 1x + b

3 = 1(-2) + b

3 = -2 + b

b = 5

so the equation of the line in slope-intercept form is y = 1x + 5

To write the equation of the line that is parallel to the graph of y + 2x = 4 and passes through the point (-1, 2), we can use the fact that parallel lines have the same slope.

The slope of the equation y + 2x = 4 is -1/2, since the coefficient of x is -1/2.

So, we can write the equation of the line in the slope-intercept form y = mx + b, where m = -1/2 and b is the y-intercept. To find the y-intercept, we can substitute the point (-1, 2) into the equation:

y = -1/2 x + b

2 = -1/2(-1) + b

2 = -1/2 + b

b = 5/2

so the equation of the line in slope-intercept form is y = -1/2x + 5/2

It's important to note that the slope-intercept form of a linear equation is y = mx + b, where m is the slope and b is the y-intercept. The y-intercept is the point where the line crosses the y-axis.

Answer:

1. could be the next step.

3. could be the next step.

Step-by-step explanation:

Answer:

(a+b)/2(a-b)

Step-by-step explanation:

Explained in the paper

Goodluck

You can solve an algebraic Riccati equation using MATLAB.

How to solve and algebraic riccati equation using matlab:

Here's a step-by-step guide:

STEP 1: To solve an algebraic Riccati equation using MATLAB, you will need to use the built-in function `care`.

This function is part of the Control System Toolbox, so ensure you have that installed.

STEP 2: Define the matrices A, B, Q, and R in your equation.

The algebraic Riccati equation is of the form:
  A'*X + X*A - X*B*R^(-1)*B'*X + Q = 0

Here's an example of how you might define these matrices in MATLAB:

```MATLAB
A = [1 2; 3 4];
B = [5; 6];
Q = [1 0; 0 1];
R = 1;
```

STEP 3: Use the `care` function to solve the algebraic Riccati equation.

The syntax is:

```MATLAB
X = care(A, B, Q, R);
```

STEP 4:  After running the above code, the variable `X` will store the solution to the algebraic Riccati equation.

You can display the result by typing `X` in the command window.

Remember to replace the example matrices A, B, Q, and R with the ones specific to your problem.

To know more about MATLAB:

https://brainly.com/question/30552909

#SPJ11

Answer:

1/2 of an answer is zero answer.

Step-by-step explanation:

Answer:

a. Solve for x. x=16

b. The lenght of the missing side is 10 units.

Step-by-step explanation:

a.

        x-6>0      x>6

According to the Pythagorean theorem: a²+b²=c².

Hence,

\((x-6)^2+24^2=26^2\\x^2-2*x*6+6^2+24*24=26*26\\x^2-12x+6*6+576=676\\x^2-12x+36+576-676=676-676\\x^2-12x-64=0\\x^2-12x-4x+4x-64=0\\x^2-16x+4x-64=0\\(x*x-16x)+(4x-64)=0\\x*(x-16)+4*(x-16)=0\\(x-16)*(x+4)=0\\x-16=0\\x_1=16\\x+4=0\\x_2=-4\notin\\\)

b.

\(16-6=\\10\)

If we take a sample of 50 students from your school and measure their height , then (c) The mean of the sample data. will be a Random Variable .

A Random Variable is a defined as a variable whose value depends on the outcome of a random event.

Option (c) : the random event is the selection of 50 students from the school to measure their height. The mean height of this sample of 50 students is a random variable because it can vary depending on the specific students who are selected.

Option (a) : The true mean height of all students from your school is a population parameter and is a fixed value, so it cannot be called as a random variable.

Option (b) : The mean of the sampling distribution of mean heights for samples of size 50 is a population parameter as well, and it represents the average of all possible sample means of size 50 taken from the population. So,  it is a fixed value and not a random variable.

Therefore , The mean of the sample data will be a random variable .

The given question is incomplete , the complete question is

Suppose you take a sample of 50 students from your school and measure their height.  Which one of the following is a random variable?

(a) The true mean height of all students from your school.

(b) The mean of the sampling distribution of mean heights for samples of size 50.

(c) The mean of the sample data.

Learn more about Random Variable here

https://brainly.com/question/28942503

#SPJ4

Answer:

x = 26, y = 120

Step-by-step explanation:

First we will find x.

We know that 3x-18 = 2x+8 because they are corresponding angles

Now we can solve for x

3x-18 = 2x+8 | subtract 2x from both sides

x-18 = 8 | add 18 to both sides

x = 26

Now we can find y. We know that 3x-18 and y are supplementary (add up to 180) since they are a linear pair (adjacent angles that form a line)

This means we can solve for y using the following :

3x-18 + y = 180 | substitute x for 26

3(26)-18 + y = 180 | simplify

60 + y = 180 | subtract 60 from both sides to isolate y

y = 120

- Kan Academy Advance

Based on the given sequences and initial values of s₁ and s₂, the possible order of execution for statements a, b, and c is either C, A, B (option B) or B, C, A (option C).

The order in which the statements a, b, and c can execute depends on the scheduling of the processes and the availability of the resources. Based on the given sequences, let's analyze the possible scenarios:

Scenario 1:

Process p₁ executes p(s₁), but s₁ is not available (s₁ = 0). So p₁ is blocked.

Process p₂ executes p(s₂), and since s₂ is available (s₂ = 1), it proceeds to execute b.

Process p₃ executes p(s₁), but s₁ is not available (s₁ = 0). So p₃ is blocked.

Eventually, s₁ becomes available (s₁ = 1).

Now, p₁ resumes and executes v(s₁), allowing statement a to execute.

Finally, p₃ resumes and executes v(s₁), allowing statement c to execute.

In this scenario, the order of execution is C, A, B.

Scenario 2:

Process p₁ executes p(s₁), but s₁ is not available (s₁ = 0). So p₁ is blocked.

Process p₂ executes p(s₂), and since s₂ is available (s₂ = 1), it proceeds to execute b.

Process p₃ executes p(s₁), but s₁ is not available (s₁ = 0). So p₃ is blocked.

Eventually, s₁ becomes available (s₁ = 1).

Now, p₃ resumes and executes v(s₁), allowing statement c to execute.

Finally, p₁ resumes and executes v(s₁), allowing statement a to execute.

In this scenario, the order of execution is B, C, A.

Therefore, based on the given sequences and initial values of s₁ and s₂, the possible order of execution for statements a, b, and c is either C, A, B (option B) or B, C, A (option C).

To know more about executes check the below link:

https://brainly.com/question/30723470

#SPJ4

The sampling distribution is based on the assumption that the null hypothesis is true.

A null hypothesis (H₀) can be defined the opposite of an alternate hypothesis (H₁) and it asserts that two (2) possibilities are the same.

A two-tailed test can be defined as a type of hypothesis test in which a rejection of the null hypothesis occurs for values of the point estimator in either tail of the sampling distribution.

In this context, we can infer and logically deduce that the sampling distribution is based on the assumption that the null hypothesis is true.

Read more on null hypothesis here: https://brainly.com/question/23822387

#SPJ4

Answer:

m=18/3

Step-by-step explanation:

m=-7-11/-6-(-1)

We can use Coulomb's law to calculate the magnitude of the electric field at a distance r away from a point charge Q:

E = k * Q / r^2

where k is Coulomb's constant, Q is the charge of the point charge, and r is the distance from the point charge.

In this problem, we have a point charge Q of -10 nC located at (1.2 cm, 0 cm), and we want to find the x-component of the electric field at a distance r = 5.3 cm away at position (-4.1 cm, 0 cm).

To find the x-component of the electric field, we need to use the cosine of the angle between the electric field vector and the x-axis, which is cos(180°) = -1.

So, the x-component of the electric field at position (-4.1 cm, 0 cm) is:

E_x = - E * cos(180°) = - (k * Q / r^2) * (-1)

where k = 9 x 10^9 N*m^2/C^2 is Coulomb's constant.

Substituting the given values, we get:

E_x = - (9 x 10^9 N*m^2/C^2) * (-10 x 10^-9 C) / (0.053 m)^2

E_x ≈ -30,566.04 N/C

Rounding this to two significant figures and including the appropriate units, we get:

The x-component of the electric field is about -3.1 x 10^4 N/C (to the left).

Answer:

d=7

Step-by-step explanation:

An=A1+(n-1)d

32=11+(4-1)d

32=11+3d

-11+32=3d

21=3d

d=7

Leah has 2/5 gallons of paint. She decides to use 1/4 of this paint to

a door. What fraction of a gallon of paint does she use for the door.

To find out what fraction of a gallon of paint Leah uses for the door, we need to multiply the amount of paint she has (2/5 gallons) by the fraction of the paint she uses for the door (1/4).When we multiply two fractions, we multiply the numerators (top numbers) together, and then the denominators (bottom numbers) together. The result is the product of the two fractions, which is also a fraction.

So,Leah uses (2/5) × (1/4) = (2 × 1) / (5 × 4) = 2/20Since 2 and 20 have a common factor of 2, we can simplify this fraction by dividing the numerator and denominator by 2:2/20 = 1/10Therefore, Leah uses 1/10 of a gallon of paint to paint the door. To summarize: Leah uses 1/10 gallon of paint to paint the door.

To know more about paint visit :

https://brainly.com/question/15277377

#SPJ11

Answer:

Step-by-step explanation:

2k + 4h is the same thing as 4h + 2k.

Which of the following is an accurate definition for the power of a statistical test is C. The power of a statistical test refers to the probability of rejecting a false null hypothesis. This means that the test is able to correctly identify when there is a significant difference between two groups or conditions.

statistical tests are used to determine whether the results of an experiment are likely due to chance or whether there is a real effect. The null hypothesis states that there is no significant difference, while the alternative hypothesis states that there is. The power of a statistical test refers to the ability of the test to correctly reject the null hypothesis when it is false, and thus support the alternative hypothesis.

, the power of a statistical test is the probability of correctly rejecting a false null hypothesis, which indicates that there is a significant difference between two groups or conditions.

To know more about probability visit:

https://brainly.com/question/32004014

#SPJ11

The range of the possible values of r^2 is 0 to 1. It represents the proportion of the dependent variable’s variance that can be explained by the independent variable(s).


The coefficient of determination, often denoted as r^2, measures the proportion of the dependent variable’s variance that can be explained by the independent variable(s) in a statistical model. The value of r^2 ranges from 0 to 1.
A value of 0 for r^2 indicates that the independent variable(s) does not explain any of the variance in the dependent variable. On the other hand, a value of 1 implies that the independent variable(s) fully explain the observed variance in the dependent variable.
Therefore, the range of the possible values of r^2 is 0 to 1. Any positive numerical value within this range indicates a degree of explanatory power, while values outside this range are not meaningful in the context of r^2. It serves as a useful tool for assessing the strength of a statistical relationship and the predictive ability of a model.

Learn more about Coefficient of determination here: brainly.com/question/29581430
#SPJ11

Answer:

$1505

Step-by-step explanation:

area = 5 x 7 = 35 m²

35 m² x $43 per m² = $1505

Answer:

B. 254 cm²

Step-by-step explanation:

Hello!

The formula for the area of a circle is \(A = \pi r^2\)

The radius is half of the diameter, given with the formula \(D = 2r\)

Using the information, we can first solve for the radius.

The radius is 9

Now we can plug 9 into the area formula:

We are going to use 3.14 for pi

The area is 254.34cm².

We are going to round to the nearest whole centimeter, which is roughly 254cm² or \(\boxed{\text{Option B}}}\)

An average of 3 people are stepping onto the roller coaster per minute at peak time. The answer is option B) 6.

To determine the number of people who are stepping onto the roller coaster per minute at peak time, you need to divide the number of people on the roller coaster by the duration of the ride. Hence, the correct option is B) 6.

To be more specific, this means that at peak time, an average of 3 people is getting on the ride per minute. This is how you calculate it:

Number of people per minute = Number of people on the roller coaster / Duration of the ride

Number of people on the roller coaster = 24

Duration of the ride = 8 minutes

Number of people per minute = 24 / 8 = 3

Therefore, an average of 3 people are stepping onto the roller coaster per minute at peak time. The answer is option B) 6.

Learn more about average visit:

brainly.com/question/24057012

#SPJ11

According to the SAS theorem, two triangles are equal if their two sides and the angle between them are both equal. The included angle is another name for the angle formed by the two sides. The side angle side is referred to as SAS.

More about SAS(Side Angle Side) theorem:

This geometric theorem gave rise to the SAS area formula, which is used in trigonometry. If you know the length of two triangle sides and the included angle, you can use the SAS area formula to determine the triangle's area. In particular, if the included angle is designated as A and the sides of the included angle are denoted by the letters b and c, then

Triangle ABC's area is (b*c*sin A) / 2.

It is crucial that the angle you use to calculate the area of the object lies between the two sides that you utilize.

So basically when the two sides and the angle between them are both equals then the SAS theorem can be used to determine whether the two triangles are also equal.

To learn more about the SAS theorem, visit: https://brainly.com/question/22472034

#SPJ4

Answer:

-r+5<-3

Step-by-step explanation:

plug in 19 to the equation inequality

The length and width of the rectangular poster are 23 inches and 7 inches respectively.

Here we have to find the dimensions of the length and width of the rectangular.

Data given:

length of the rectangular poster is 2 more than three times its width.

Let us assume that the width of the rectangular is x.

The area of the poster = is 161 inches²

So by this, we get the length 3x + 2.

width = x

length = 3x + 2

The formula of the area of the rectangular:

Area = length × width

161 = (3x+ 2) × x

161 = 3x² + 2x

3x² + 2x - 161 = 0

3x² + 23x - 21x - 161 = 0

x(3x + 23) - 7( 3x + 23) = 0

(3x + 23) ( x -7)= 0

x = -23/3, 7

As the length cannot be negative so we get the value of x as 7

width = 7 inches

length = 3x + 2

= 3×7 + 2

= 21 + 2

= 23inches

Therefore the length and width are 23 inches and 7 inches respectively.

To know more about the area of the rectangular refer to the link given below:

https://brainly.com/question/25292087

#SPJ4

If the discount rate is 4%,the present value of the savings account is $5,448.50.

From the question above, :Savings amount = $7,942

Discount rate = 4%

Time period = 9 years

We need to calculate the present value of the savings account.To calculate the present value, we will use the formula,PV = FV / (1 + r)n

Where,PV = Present value of savings account

FV = Future value of savings account

r = discount rate, and

n = Time period

In this problem,PV = ?

FV = $7,942

r = 4%

n = 9 years

Substitute the values in the formula,

PV = 7,942 / (1 + 0.04)9

PV = $5,448.50

Therefore, the present value of the savings account is $5,448.50.

Learn more about present value at

https://brainly.com/question/30348657

#SPJ11