What is the quadratic equation in standard form of a 2 b =- 3 and C =- 6?

Answer:

∠ABD ≅ ∠CBE

Step-by-step explanation:

So we know that ∠ABC ≅ ∠DBE. Those angles equal the same thing. Let's represent that with x.

So does ABD = CBE?

Well we can model that with our xs.

ABD = ABC + CBD

so ABD = x + CBD

CBE = DBE + CBD

so CBE = x + CBD

Look at what we have!

x + CBD = x + CBD.

You can tell that ∠ABD ≅ ∠CBE because those given angles are equal to each other.

Or for an easier (but lazier) method, you can just look at the diagram, which is actually drawn to a reasonable scale. You can tell right off the bat that none of the other options work.

Answer:

s = 23 - e

Step-by-step explanation:

In this expression, s is equal to the amount of extra credit Sofia earns. She earns e less points than the 23 points Zeke earns.

So, s (Sofia's points) = 23 (Zeke's points) - e (the difference in points).

The expression is s = 23 - e.

Good luck ^^

Step-by-step explanation:

You need to find 37%  of  $ 77.04

  37%   is  .37 in decimal form

.37  * $ 77.04 = $28.50

Making the retail price :  77.04 + 28.50 = $  105.54     Check !

Answer:

those are the right answers

Step-by-step explanation:

for sin90 you have to put sin(90) which is 1, all the other answers r correct (same with my calculator)

Answer: See explanation

Step-by-step explanation:

Number of tickets Elian won = e

Number of tickets Alberto won = A = e - 10

Therefore, Elian + Alberto ticket = 100

e + (e - 10) = 100

2e - 10 = 100

2e = 100 + 10

2e = 110.

e = 110/2

e = 55

Elina has 55 tickets

Alberto has 55-10 = 45 tickets

Answer:

Step-by-step explanation:

3×x+4×3

3x+12

Answer:

Step-by-step explanation:

The first step would be to multiply out the bracket. So, using this example we would times each item inside the bracket by 3.

As a result we would get: 3x + 12 = 18

Then we would need to move the 'x' value to one side of the equation and the rest of the equation to the other side. To move '12' onto the other side of the = sign we need to subtract 12 from both sides.

This would then bring us to: 3x = 6

Finally, to find the value of 'x' we then need to divide both side of the equation by 3.  

Resulting in the final answer of x = 2

In general form, the equation is 8x² + 30x - 2x = 0.

In factored form, the equation is 4x(2x + 7) = 0.

To solve the equation 8x² + 30x = 2x, we can rearrange it to bring all the terms to one side:

8x² + 30x - 2x = 0

Combining like terms:

8x² + 28x = 0

Now, let's factor out the common factor of 4x:

4x(2x + 7) = 0

To find the solution set, we set each factor equal to zero and solve for x:

4x = 0 -> x = 0

2x + 7 = 0

2x = -7

x = -7/2

Therefore, the solution set for the equation is {0, -7/2}.

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The solution of m for question 6 and the value of z for question 10 does not exist.

According to the question,

We have the following information,

6) 1/3 + 2m/3 = 2m/3-2/3

Now, moving the terms with the same variables in one side:

2m/3-2m/3+1/3 = -2/3

Now, when 2m/3 is subtracted from 2m/3 then we have no variable left.

So, the solution of this equation does not exist.

10) 2.5(2z+5) = 5(z+2.5)

Now, multiplying the numbers outside the bracket into bracket:

5z+12.5 = 5z+12.5

Moving the terms with the same variables on one side:

5z-5z+12.5 = 12.5

Now, when 5z is subtracted from5z then we have no variable left.

So, the solution of this equation does not exist.

Hence, the solutions of the equation 6 and equation 10 does not exist.

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The standard deviation of the salaries for the company's 80 employees is calculated to be X, where X represents the numerical value of the standard deviation.

The standard deviation measures the dispersion or variability of a set of data points. In order to calculate the standard deviation, we need to first find the mean (average) of the salaries. Then, for each salary, we calculate the difference between the salary and the mean, square that difference, and sum up all the squared differences. Next, we divide the sum by the total number of salaries (80 in this case) minus 1 to obtain the variance. Finally, the standard deviation is obtained by taking the square root of the variance. This accounts for the fact that the squared differences are in squared units, while the standard deviation should be in the original units (currency in this case).

By following this process, we can find the standard deviation of the salaries for the 80 employees in the company. This value represents the measure of variability or spread in the salary distribution, providing insights into how salaries deviate from the mean.

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The true statements are, Line A B and Line C G are parallel, Line C G and Line R S are perpendicular, Line A B and Line R S must intersect and Line segment C G lies in plane X.

Given that Planes X and Y intersect at a right angle. Line AB and CG are on plane X, while line RS is on plane Y. Therefore, line CG lies on plane X.

Since both line AB and CG lie on the same plane, they are parallel to each other.

Since plane X and plane Y are perpendicular to each other and line CG is on plane X while line RS is on plane Y, this means that Line CG and Line RS are perpendicular to each other.

Line AB and Line RS may or may not intersect. They could be skew lines, which do not intersect and are not parallel.

Line segment CG lies on plane X since it is contained within the plane that contains points C, G, and either A or B.

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The question is -

Which statements are true? Select three options.

a. Line A B and Line C G are parallel.

b. Line A B and Line R S are parallel.

c. Line C G and Line R S are perpendicular.

d. Line A B and Line R S must intersect.

e. Line segment C G lies in plane X.

f. Line segment R S lies in plane X.

Answer: ace

Step-by-step explanation:

hypotenuse = 16

perpendicular = 13

base= ?

By using pythogoras theroem :

H² = P² + B²

16² = 13² + B²

256 = 169 + B²

B² = 256 -169

=87

B² = 87

B = √87

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Answer: The correct answer is D - square root of 87

Step-by-step explanation: I took the test and I got it right.

Have a good day/night :)

The number of green jellybeans that Shiloh should share, given the ratio of jellybeans is 4 green jellybeans

The ratio of jellybeans is 32 : 56 which means that there are 32 green jellybeans to 56 pink jellybeans.

This means that the percentage of green jellybeans to pink jellybeans is :

= 32 / 56 x 100 %

= 57. 14 %

This means that when 7 pink jellybeans are given, the number of green jellybeans is :

= 57. 14 % x 7

= 4 green jellybeans

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The full question is :

Shilo is sharing jellybeans. The jar of jellybeans has the ratio 32:56. If shilo keeps the ratio the same and gives his friend 7 pink jellybeans, how many green jellybeans would he also share

Using the inscribed angle theorems, the measure of the indicated angles are:

1. m∠BOA = 26°

2. m∠BDA = 13°

3. m∠BCA = 13°

Based on the inscribed angle theorem, the following relationships are established:

Given:

Intercepted arc BA = 26°

1. ∠BOA is central angle

Thus:

m∠BOA = 26° (inscribed angle theorems)

2. ∠BDA is inscribed angle.

m∠BDA = 1/2(30) = 13° (inscribed angle theorems)

3. m∠BCA = m∠BDA = 13° (inscribed angle theorems)

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The point (x,y) on reflection over x-axis, chanes to (x,-y) or x-xoordinate remain same and y-coordinate changes.

So point (4,-3) after reflection over the x-axis changes to (4,3).

Answer: (4,3)

Answer:

thirteen sixteenths

Answer:

hi i think the answer shouldbe 34/43 as its out of 43 and there is 34 people on the internet. I think this should be write but it may  be wrong. if this is right please vote for brainliest. i hope my answer is right and this helps bye.

Answer:

390 degrees

Step-by-step explanation:

30 + 360 = 390

Answer:

a=-3,b=-1,c=5

Step-by-step explanation:

move all the variables to the right, and then all the x with number and number move to the left. then solve it. by using the formula to compare which is ax2+bx+c compare to the things you solve come out. then you will get a=-3,b=-1,c=5

Solution

Given a rectangle of the dimension

To find the area, A, of a rectangle, the formula is

Where

Substitute the values into the formula above

Hence, the answer is 0.07ft² (nearest hundredth)

The value of all sub-parts has been obtained.

What is probability?

The probability of an occurrence is a number used in science to describe how likely it is that the event will occur. It is stated as a number between 0 and 1, or, when using percentage notation, in the range between 0% and 100%. The possibility of an event increasing with its likelihood.

As given,

Blue balls = 3, white balls = 2.

Total balls = blue balls + white balls

Total balls = 3 + 2

Total balls = 5

(1)  Evaluate the probability that first draw is a white ball.

P (white ball) = 2C1/5C1

P (white ball) = 2/5

P (white ball) = 0.4

(2) Evaluate the probability that first two draws are blue balls.

P (first two blue ball) = (3/5)*(2/4)

P (first two blue ball) = 6/20

P (first two blue ball) = 0.3

(3) Evaluate the probability that first three draws are blue balls.

P (first three blue ball) = (3/5)*(2/4)*(1/2)

P (first three blue ball) = 6/40

P (first three blue ball) = 0.15

(4) Evaluate the probability that pull blue, white, blue, white, blue in that order.

Probability that 1st blue, 2nd white, 3rd blue, 4th white, and 5th blue is

P = (3/5)*(2/4)*(2/3)*(1/2)*1

P = 12/120

P = 0.1

(5) Evaluate the probability that first three draws are blue balls.

P = (3/5)*(3/5)*(3/5)

P = 27/125

P = 0.216

Hence, the value of all sub-parts has been obtained.

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Answer:

1070707.5552

Step-by-step explanation:

Answer:

10707075.552

Step-by-step explanation:

used a calculator because I'm way too tired to write this down...

Answer:

-37

Step-by-step explanation:

-7-30

=-37

You are adding the negatives therefore, you will get a larger number of negatives.

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Work Shown:

350 sq ft = 18.75 dollars

1 sq ft = (18.75/350) dollars  .... divide both sides by 350

1 sq ft = 0.053571 dollars approximately

One square foot costs about 0.053571 dollars

Multiply both sides by 2345 to get

1 sq ft = 0.053571 dollars

2345*1 sq ft = 2345*0.053571 dollars

2345 sq ft = 125.623995 dollars

2345 sq ft = 125.62 dollars

Answer:

I beleive is it B "The domain is the set of real numbers great then 2."

Answer:

a

Step-by-step explanation:

my aunt is a teacher she told me the answer

Answer:

last option is correct

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

The mean, standard deviation, of the average number of moths in 30 traps is approximately 0.5 ± 0.018 and is approximately 0.5 respectively. The probability that the average number of moths in 30 traps is greater than 0.4 is approximately 0.965 ± 0.01.

The mean of the average number of moths in 30 traps can be calculated as the mean of a sample of 30 trap counts, where the mean of each sample follows a normal distribution with mean 0.5 and standard deviation 0.5/sqrt(30) (using the standard error of the mean formula). Therefore, the mean of the average number of moths in 30 traps is:

mean = 0.5 ± 0.1/sqrt(30) = 0.5 ± 0.018

So the mean of the average number of moths in 30 traps is approximately 0.5 ± 0.018.

The standard deviation of the average number of moths in 30 traps can also be calculated using the standard error of the mean formula:

standard deviation = standard error of the mean * sqrt(sample size)

standard deviation = 0.5/sqrt(30) * sqrt(30) = 0.5

So the standard deviation of the average number of moths in 30 traps is approximately 0.5.

Using the central limit theorem, we can assume that the sample mean of the 30 traps follows a normal distribution with mean 0.5 and standard deviation 0.5/sqrt(30). We want to find the probability that the average number of moths in 30 traps is greater than 0.4.

To do this, we can standardize the sample mean using the formula:

z = (sample mean - population mean) / (standard deviation / sqrt(sample size))

z = (0.4 - 0.5) / (0.5/sqrt(30)) = -1.8257

Using a standard normal distribution table or calculator, we can find the probability that Z is greater than -1.8257, which is approximately 0.965. Therefore, the probability that the average number of moths in 30 traps is greater than 0.4 is approximately 0.965 ± 0.01.

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The presence of a statistically significant difference tells you that there is a large effect size is false.

Statistical significance: When conducting a statistical analysis, researchers aim to determine if the results they observe are statistically significant. Statistical significance is a measure that helps determine whether the observed difference between groups (or the relationship between variables) is unlikely to have occurred due to random chance. It is typically assessed using statistical tests such as t-tests, chi-square tests, or analysis of variance (ANOVA).

Effect size: Effect size, on the other hand, provides a measure of the magnitude or strength of the relationship or difference being studied. It quantifies the practical significance or importance of the effect observed in the data. Effect size is independent of sample size and helps researchers understand the extent to which the independent variable (or intervention) influences the dependent variable.

The misconception in the statement you mentioned is that a statistically significant difference does not necessarily imply a large effect size. Statistical significance focuses on the likelihood that the observed difference is due to more than just chance, while effect size focuses on the magnitude or practical importance of that difference.

In some cases, a study may find a statistically significant difference with a small effect size, indicating that although the groups being compared are different, the practical significance of that difference may be minimal. Conversely, a study may find a statistically nonsignificant difference with a large effect size, suggesting that although the difference observed may not be statistically significant, it still has practical importance.

To gain a comprehensive understanding of the results, it is important to consider both statistical significance and effect size together. This helps researchers interpret the practical implications of their findings accurately.

Therefore, The presence of a statistically significant difference tells you that there is a large effect size is false.

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In this scenario, the information obtained from all 200 residents who visited the store represents a subset of the total population. Therefore, it is an example of a sample.

In statistics, a population refers to the entire group of individuals or objects that we want to study and make inferences about. In this scenario, the population would consist of all the residents of the small town in California, which includes the 800 residents.

However, Mr. Phillip was only able to obtain information from a subset of the population, specifically the 200 residents who visited the store. This subset, known as the sample, is a smaller representative group selected from the population to gather information and make inferences about the larger population.

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