i need help with this please

Answer:

An equilateral triangle has three lines of symmetr

Step-by-step explanation:

letter d

Answer: 3

Step-by-step explanation: i took test

Answer:

14

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

Only way you apply Pythagoras is if the triangle is a right triangle. it won't work anyway else

The word "bookkeeper" can be arranged in 9!/(2! 2! 2!) unique ways.Let's solve the problem.The word "bookkeeper" has nine letters, but there are three "o's," two "k's," and two "e's."Using the formula for permutations.

the number of arrangements of the nine letters in the word "bookkeeper" is given by the following formula:n! / (n1! * n2! * n3!...* ni!) where n is the total number of items, and n1, n2, n3, ... ni are the number of times the individual items are repeated in the n elements. It follows that:n! / (3! * 2! * 2!) = 362880 / (6 * 2 * 2) = 22680

Therefore, there are 22680 distinct methods to rearrange the letters in the word "bookkeeper."Answer: 22680.

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Answer:

x= ((d+c)/a) - b

(the d+c/a are sperated from be )

Step-by-step explanation:

Remeber always move the  + or - over first

a(x+b) = d + c

then divide by a

(x+b) = (d+c)/a

-b on both side

x= ((d+c)/a) - b

Answer:

68%

Step-by-step explanation:

17% × 4

68%

Answer:

53

Step-by-step explanation:

The difference between the volume of the 2 rectangular prism containers is V = 70 inches³

A three-dimensional solid object called a prism has two identical ends. It consists of equal cross-sections, flat faces, and identical bases. Without bases, the prism's faces are parallelograms or rectangles.

The volume of a prism is the product of its base area and height

Volume of Prism = B x h

where B = base area of prism

h = height of prism

Given data ,

Let the difference between the volume of the rectangular prism be D

Now , the amount of sand poured into the container = 375 inches³

And , the dimensions of the first rectangular container = 5 inches x 7 inches x 9 inches

So , the volume of the first rectangular prism V₁ = 5 x 7 x 9 = 315 inches³

where amount of sand poured into the container > volume of the first rectangular prism

Therefore , the sand cannot be poured into the prism container

b)

The height of the second rectangular container = ( h + 2 ) inches = 11 inches

So , the volume of the second prism container V₂ = 5 x 7 x 11

The volume of the second prism container V₂ = 385 inches³

And , the difference in the volumes of the 2 containers V = V₂ - V₁

On simplifying , we get

The difference between the volume of the 2 rectangular prism containers is V = 385 - 315

The difference between the volume of the 2 rectangular prism containers is V = 70 inches³

c)

The dimensions of the container which contains 375 inches³ of sand is given by V₃ = 5 inches x 5 inches x 15 inches

Hence , the volume of the rectangular prism is solved

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The complete question is :

Jack has 375 in. of sand to pour into a rectangular prism. The base of the prism is 5 inches by 7 inches and the height is 9 inches.Part A

Will the sand fit in the container? Explain why or why not.

Part B

A second rectangular prism is 2 inches taller than the first.

What is the difference in the volumes of the 2 containers? Show your work.

Part C

What are the measurements of a rectangular prism that will hold exactly 375 in. of the sand? Justify your answer.

The answer is letter A. (x + 4)(x - 2)

The answers are the black circles, just we need to change the signs as i did.

Answer:

A

Step-by-step explanation:

The probability of choosing sausage and onion by Rosa's mom from the given 8 different toppings as per given condition is equal to

(1/ ⁸C₂).

As given in the question,

Total number of different toppings = 8

Number of different toppings choose by Rosa's mom randomly = 2

Possibility of choosing sausage and onion (any one) = 1

Total number of outcomes = ⁸C₂

Number of favorable outcomes = 1

Probability of choosing sausage and onion ( exactly ) one topping

= ( Number of favorable outcomes ) / ( Total number of outcomes )

= ( 1/⁸C₂ )

Therefore, the probability when Rosa's mom chooses sausage and onion out of 8 toppings is equal to ( 1/⁸C₂ ).

The above question is incomplete, the complete question is:

A pizza restaurant is offering a special price on pizzas with 2 toppings. They offer the toppings

below:

Pepperoni ,Sausage, Chicken ,  Green pepper , Mushroom ,Pineapple, Ham, Onion

Suppose that Rosa's favorite is sausage and onion, but her mom can't remember that, and she is going to randomly choose 2 different toppings.

What is the probability that Rosa's mom chooses sausage and onion?

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Answer:

1/8c^2

Step-by-step explanation:

Khan Acadmey

Answer: slope is negative 1

Step-by-step explanation:

The sample standard deviation Sₓ for these measurements is 155.8846 and the actual confidence level for the given interval is unknown.

Standard deviation is a statistic that measures the dispersion of a dataset relative to its mean and is calculated as the square root of the variance.

Given that, a report gives the results in the form "mean plus or minus the standard error of the mean."11 Data for 12 subjects are summarized as 251 ± 45

SE = 45, x = 251, n = 12,

Confidence level =

SE = Sₓ/√n

Sₓ = 45 × √12

Sₓ = 155.8846

The confidence interval is calculated by using the formula,

x ± (t* × E),

The interval in the problem is (t* × E),

And, t* is unknown.

As a result, the provided interval is not a confidence interval.

Hence, the sample standard deviation Sₓ for these measurements is 155.8846 and the actual confidence level for the given interval is unknown.

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To find the equation of a parabola that passes through two points and a third point, we need to write a system of three equations in three variables (a, b, and c) using the standard form of the parabolic equation, and then solve for the variables.

To find the equation of a parabola that passes through two points, we can use the standard form of a parabolic equation: y = ax^2 + bx + c. Since we have two points, (x1,y1) and (x2,y2), we can write two equations:
y1 = ax1^2 + bx1 + c
y2 = ax2^2 + bx2 + c
We need to solve for a, b, and c. One way to do this is to eliminate c by subtracting the second equation from the first:
y1 - y2 = a(x1^2 - x2^2) + b(x1 - x2)
Now we can use the fact that the parabola passes through a third point, (x3,y3), to write another equation:
y3 = ax3^2 + bx3 + c
We can substitute c from the first equation into this equation:
y3 = ax3^2 + bx3 + y1 - a(x1^2 - x2^2) - b(x1 - x2)
Now we have three equations and three unknowns (a, b, and c), which we can solve using algebra or matrix methods. Once we have the values of a, b, and c, we can plug them into the standard form of the parabolic equation to get the equation of the parabola that passes through the three points.
The resulting equation will be the equation of the parabola that passes through the given points.

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The ratio of false positives to true positives is 8 over 54.

According to the Question

Results of a strep throat test performed on a sample of 400 ill people are displayed in the table's data. People who have the flu and those who don't are separated into two categories. The patients are then separated into groups based on whether they tested positive or negative for strep throat within each of these categories.

We must first define what a true positive and a false positive are in order to calculate the ratio of false positives to true positives. A patient who tests positive for strep throat but does not actually have the illness is said to have a false positive. The 8% of patients in this instance who tested positive for strep throat but did not have the flu would fall under that category. A patient who tests positive for strep throat and truly has the illness is said to have a true positive. That would be the 54% of patients who tested positive for both the flu and strep throat in this instance.

We divide the percentage of false positives (8%) by the percentage of true positives (54%), which gives us the ratio of false positives to true positives.

As a result, the ratio becomes 8% / 54%, or 8/54.

It's critical to remember that this ratio is dependent on the sample and test performed and may not be the same for different populations or testing methodologies.

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Step-by-step explanation:

im pretty sure ur supposed to find so the answer woild be c=0.8

Hey there!

\(Answer:\boxed{c=\frac{5}{4}}\)

\(Explanation:\)

\(5c-6=4-3c\)

\(5c+-6=4+-3c\\5c-6=-3c+4\) Simplify both sides of equation.

\(5c-6+3c=-3c+4+3c\\8c-6=4\) Add 3c to both sides.

\(8c-6+6=4+6\\8c=10\) Add 6 to both sides.

\(\frac{8c}{8}=\frac{10}{8}\) Divide both sides by 8.

\(c=\frac{5}{4}\)

Hope this helps!

\(\text{-TestedHyperr}\)

The percent error of masdion estimate is 8%.

As we know that some degree of error is often associated with measurements. Percent error is used to determine how close the value is to the accepted answer.

We know,

\(\frac{Error}{actual value} = \frac{Percent}{100}\)                                               equation 1

Total number of jelly beans in a jar estimated by madison = 918

The actual number of jelly beans = 850

Error = Estimated jelly beans - Actual number of jelly beans

Error = 918 - 850

Error = 68

Substitute value of error and actual value in equation 1 , we will get

( 68 / 850 ) = ( percent error / 100 )

0.08 × 100 = percent error

percent error = 8 %

Thus, 8% was the percent error of masdion estimate.

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Answer:

4 1/2 <h

Step-by-step explanation:

The sequence in which the three classes might be served in order to achieve the WFQ weights is: Class 1: 25%, Class 2: 50%, Class 3: 75%

WFQ scheduling policy stands for the Weighted Fair Queuing scheduling policy. It is a packet scheduling technique that is utilized in Quality of Service (QoS) for network resources that are shared among different applications and users. The WFQ technique aims at equalizing the traffic and providing fair access to network resources. WFQ is an improvement over traditional Round Robin scheduling.

WFQ assigns the weights to different classes and sorts the packets in the buffer based on priority. It then serves the packets by assigning transmission time slots to them. The packets with the highest priority are served first and so on until all the packets have been served.

The WFQ scheduling policy is applied to a buffer that supports three classes of priority packets, and the weights are 0.25, 0.5, and 0.75 for the three classes. To achieve the WFQ weights, the three classes might be served in the following sequence: Class 1: 25%, Class 2: 50%, Class 3: 75%

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Answer:

The equation of new line is: \(\mathbf{y=\frac{3}{4}x-12}\)

Option H is correct.

Step-by-step explanation:

We need to write an equation for the line that is parallel to the given line \(y=\frac{3}{4} x-9\) and point (-8,-18)

The equation of required line will in in form \(y=mx+b\) where m is slope and b is y-intercept.

We need to find slope m and b y-intercept for new line.

Finding slope:

When two lines are parallel, they have the same slope.

The slope of given line can be found by comparing the equation \(y=\frac{3}{4} x-9\) with \(y=mx+b\)

So, m = 3/4

The slope of new line will be: \(m=\frac{3}{4}\)

Finding y-intercept:

Using slope m = 3/4 and point (-8,-18) we can find y-intercept

\(y=mx+b\\-18=\frac{3}{4}(-8)+b\\-18=-6+b\\b=-18+6\\b=-12\)

So, y-intercept is b=-12

The equation of new line having m = 3/4 and b=-12 is:

\(y=mx+b\\y=\frac{3}{4}x-12\)

So, the equation of new line is: \(\mathbf{y=\frac{3}{4}x-12}\)

Option H is correct.

there are 56,280 different strings that can be created by rearranging the letters in "addressee".

The word "addressee" has 8 letters, but it contains 3 duplicate letters "e", 2 duplicate letters "d", and 2 duplicate letters "s". Therefore, the number of different strings that can be created by rearranging the letters in "addressee" is:

8! / (3! 2! 2!) = 56,280

what is combination?

In mathematics, combination refers to the selection of a subset of objects from a larger set, where the order in which the objects are selected does not matter.

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The air pressure inside a category five hurricane with a wind speed of 300 km/h can be estimated using Bernoulli's equation.the atmospheric pressure is 20.96 atmospheres,

Bernoulli's equation states that the pressure inside the hurricane is equal to the density of the air multiplied by the wind speed squared, divided by two.

In this case, the air pressure can be calculated to be 20.96 atmospheres.  density of the air can be taken to be 1.29 kg/m³ . This demonstrates that the air pressure inside a category 5 hurricane with a wind speed of 300 km/h is very high, which is why these storms are so destructive.

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Therefore , the solution of the given problem of equation comes out to be value of g is 12 .

In a math equation, the comparable symbol (=) is used to denote equality between two propositions. It is demonstrated that by using mathematical formulas, which have been expressions of reality, different numerical factors can be compared. The equal sign, for instance, splits the integer 12 or the equation y + 6 = 12 to 2 different halves. It is possible to determine how many characters each side of such a symbol has. It's common for symbols to have conflicting meanings.

Here,

Given :

=> g -3 = 9

To find the value of g :

=> g = 9 + 3

=> g = 12

Thus , value of g is 12.

Therefore , the solution of the given problem of equation comes out to be value of g is 12 .

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The type of sampling described, where the researchers intentionally select a sample with 50% straight and 50% LGBTQ+ respondents, is known as "disproportionate stratified sampling."

A. Disproportionate stratified sampling involves dividing the population into different groups (strata) based on certain characteristics and then intentionally selecting a different proportion of individuals from each group. In this case, the researchers are dividing the population based on sexual orientation (straight and LGBTQ+) and selecting an equal proportion from each group.

B. Availability sampling (also known as convenience sampling) refers to selecting individuals who are readily available or convenient for the researcher. This type of sampling does not guarantee representative or unbiased results and may introduce bias into the study.

C. Snowball sampling involves starting with a small number of participants who meet certain criteria and then asking them to refer other potential participants who also meet the criteria. This sampling method is often used when the target population is difficult to reach or identify, such as in hidden or marginalized communities.

D. Simple random sampling involves randomly selecting individuals from the population without any specific stratification or deliberate imbalance. Each individual in the population has an equal chance of being selected.

Given the description provided, the sampling method of intentionally selecting 50% straight and 50% LGBTQ+ respondents represents disproportionate stratified sampling.

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Answer:

it should be x=2 or x=--4

The coordiantes of M that divides AB in the ratio 1:2 are (2,1).

Coordinates are two numbers (Cartesian coordinates), or sometimes a letter and a number, that locate a specific point on a grid, known as a coordinate plane

To calculate the coordinate of M, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equatio 1 and 2 respectively

Hence, the coordinates of M are (2,1).

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The probability distribution of X is 0.5, 0.25, 0.25, and 0.125. Mean value ∑ X × P (X) = 1.875. Standard Deviation of X = 1.0533

a) For a fair coin,

P(H) = P(T) = 0.5

Outcome  X                            Probability

T                  1                                  0.5

HT              2                       0.5×0.5 = 0.25

HHT          3                       0.5×0.5×0.5 = 0.125

HHHT          4                           0.5×0.5×0.5×0.5 = 0.0625

HHHH          4                           0.5×0.5×0.5×0.5 = 0.0625

So, probability distribution of X is

X P(X)

1 0.5

2 0.25

3 0.125

4 0.0625+0.0625 = 0.125

b)

X     P(X)    X×P(X)         X2×P(X)

1     0.5     0.5          0.5

2     0.25      0.5               1

3     0.125    0.375         1.125

4     0.125       0.5            2

sum 1     E(X) = 1.87

c) Variance = E(X²) - E(X)²

= 4.625 - 1.875²

= 1.1094

Standard Deviation of X = √ Variance

= √1.1094

= 1.0533

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The probability of obtaining a sample mean between 4.1 and 4.11 in a random sample of size 511 is 0.

To calculate the probability that a random sample of size 511, selected with replacement, will yield a sample mean between 4.1 and 4.11 in a discrete uniform population with x = 2.4, we can use the properties of the sample mean and the given population.

In a discrete uniform population, all values are equally likely. Since the mean of the population is x = 2.4, it implies that each value in the population is 2.4.

The sample mean is calculated by summing all selected values and dividing by the sample size. In this case, the sample size is 511.

To find the probability, we need to calculate the cumulative distribution function (CDF) for the sample mean falling between 4.1 and 4.11.

Let's denote X as the value of each individual in the population. Since X is uniformly distributed, P(X = 2.4) = 1.

The sample mean, denoted as M, is given by M = (X1 + X2 + ... + X511) / 511.

To find the probability P(4.1 < M < 4.11), we need to calculate P(M < 4.11) - P(M < 4.1).

P(M < 4.11) = P((X1 + X2 + ... + X511) / 511 < 4.11)
           = P(X1 + X2 + ... + X511 < 4.11 * 511)

Similarly,
P(M < 4.1) = P(X1 + X2 + ... + X511 < 4.1 * 511)

Since each value of X is 2.4, we can rewrite the probabilities as:

P(M < 4.11) = P((2.4 + 2.4 + ... + 2.4) < 4.11 * 511)
           = P(2.4 * 511 < 4.11 * 511)

Similarly,
P(M < 4.1) = P(2.4 * 511 < 4.1 * 511)

Now, we can calculate the probabilities:

P(M < 4.11) = P(1224.4 < 2099.71) = 1 (since 1224.4 < 2099.71)
P(M < 4.1) = P(1224.4 < 2104.1) = 1 (since 1224.4 < 2104.1)

Finally, we can calculate the probability of the sample mean falling between 4.1 and 4.11:

P(4.1 < M < 4.11) = P(M < 4.11) - P(M < 4.1)
                 = 1 - 1
                 = 0

Therefore, the probability that a random sample of size 511, selected with replacement, will yield a sample mean between 4.1 and 4.11 in the given discrete uniform population is 0.

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Answer: I dont know what the fill in the blank would be, but simply make any number not negative

Step-by-step explanation: Example |-3| = 3

there are always positive