Which of theses is a rectangle pentagon, trapezoid, square, rhombus

Answer:

x = 7 or -6

Step-by-step explanation:

Let a number be x.

Its square = x²

x - x² = 42

-x² + x - 42 = 0

-(x² - x + 42) = 0

x² - x + 42 = 0

(x - 7)(x + 6) = 0

x - 7 = 0 or x + 6 = 0

x = 7 or x = -6

Answer:

c) -4x + 8

Step-by-step explanation:

distribute -4:

-4 · x = -4x

-4 · -2 = 8

= -4x + 8

Answer:

\(\orange{ \rule{40pt}{555555pt}}\)

Answer:

Step-by-step explanation: The expected loss is 50 cents, we know that it is more likely to lose than win. It is therefore difficult to get-50, so the overall difference between the two possibilities is 2, 50/200=1/4, and the probability to win is 1/4, and the probability to lose is 3/4. Since (1/4)*3=3/4, the number of black balls is 3 times the number of white balls, so k=15.

Answer:

(a) To find the probability that at most 8 accidents involve a single vehicle, we need to calculate the probability of 0, 1, 2, ..., 8 accidents involving a single vehicle and then add them up. Using the binomial distribution formula with n=20 and p=0.6 (the probability of an accident involving a single vehicle), we get:

P(X ≤ 8) = Σi=0^8 (20 choose i) * 0.6^i * (1-0.6)^(20-i) = 0.000 + 0.002 + 0.014 + 0.062 + 0.178 + 0.345 + 0.409 + 0.262 + 0.068 = 0.999

Therefore, the probability that at most 8 accidents involve a single vehicle is 0.999.

(b) To find the probability that exactly 8 accidents involve a single vehicle, we simply plug in i=8 in the binomial distribution formula:

P(X = 8) = (20 choose 8) * 0.6^8 * (1-0.6)^(20-8) ≈ 0.167

Therefore, the probability that exactly 8 accidents involve a single vehicle is approximately 0.167.

(c) To find the probability that exactly 10 accidents involve multiple vehicles, we need to calculate the probability of exactly 10 accidents involving multiple vehicles and 10 accidents involving a single vehicle. Using the binomial distribution formula with n=20 and p=0.6, we get:

P(X = 10) = (20 choose 10) * 0.4^10 * 0.6^10 ≈ 0.117

Therefore, the probability that exactly 10 accidents involve multiple vehicles is approximately 0.117.

(d) To find the probability that between 5 and 8, inclusive, involve a single vehicle, we need to calculate the probability of 5, 6, 7, and 8 accidents involving a single vehicle and then add them up. Using the binomial distribution formula with n=20 and p=0.6, we get:

P(5 ≤ X ≤ 8) = Σi=5^8 (20 choose i) * 0.6^i * (1-0.6)^(20-i) ≈ 0.854

Therefore, the probability that between 5 and 8, inclusive, involve a single vehicle is approximately 0.854.

(e) To find the probability that at least 5 accidents involve a single vehicle, we need to calculate the probability of 5, 6, ..., 20 accidents involving a single vehicle and then add them up. Using the binomial distribution formula with n=20 and p=0.6, we get:

P(X ≥ 5) = Σi=5^20 (20 choose i) * 0.6^i * (1-0.6)^(20-i) ≈ 0.999

Therefore, the probability that at least 5 accidents involve a single vehicle is approximately 0.999.

(f) To find the probability that exactly 8 accidents involve a single vehicle and the other 12 involve multiple vehicles, we need to multiply the probability of 8 accidents involving a single vehicle by the probability of 12 accidents involving multiple vehicles. Using the binomial distribution formula with n=20 and p=0.6, we get:

P(X = 8) * P(X = 12) = (20 choose 8) * 0.6^8 * (1-0.6)^(20

(Please could you kindly mark my answer as brainliest you could also follow me so that you could easily reach out to me for any other questions)

The probability that a woman has breast cancer given that her test result is positive is, 0.0875, and The probability that a woman does not have breast cancer given that her test result is negative will be 0.125

It is defined as the ratio of the number of favorable outcomes to the total number of outcomes, in other words, the probability is the number that shows the happening of the event.

It is given that,  there are 2000 women. Of these women, 16 are known to have breast cancer, and 154 test positive. 14 of the 16 that have breast cancer test positive and 140 of those that do not have breast cancer test positive.

The probability that a woman has breast cancer given that her test result is positive is,

=14/16

=0.0875

The probability that a woman does not have breast cancer given that her test result is negative will be,

=1-0.0875

=0.125

Thus, the probability that a woman has breast cancer given that her test result is positive is, 0.0875, and The probability that a woman does not have breast cancer given that her test result is negative will be 0.125

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Answer:

by 91 dollars

Step-by-step explanation:

22.75

       4

----------

 91 0 0

Based on the given graph, the domain of the function can be expressed as [-5, 2], indicating that the function is defined for x-values within this interval.

Therefore, based on the given graph, the domain of the function can be expressed as [-5, 2], indicating that the function is defined for x-values within this interval.

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Answer:

Step-by-step explanation:

ratio and proportion:

3 tickets  = 7 tickets

$13.20            x

then cross multiply:  3 (x) = 13.20 (7)

simplify: 3x = 92.4

solve for x = 92.4 / 3

x = $ 30.8

therefore,

7 tickets costs $ 30.8

The lighthouse keeper should land approximately 3 miles from the point on the shore nearest to the lighthouse in order to make the fastest possible time to the restaurant.

To determine the fastest possible time for the lighthouse keeper to reach the restaurant, we need to calculate the time it takes for him to row to the shore and then walk to the restaurant. The key is to minimize the total time taken.

Let's denote the distance from the landing point to the restaurant as x miles. The time taken to row to the shore can be calculated as 7 miles divided by the rowing speed of 2.7 mph, which is approximately 2.59 hours.

The time taken to walk from the landing point to the restaurant can be calculated as (14 + x) miles divided by the walking speed of 4 mph.

To minimize the total time, we need to find the value of x that minimizes the sum of the rowing time and the walking time. So, we can set up the equation:

Total time = 2.59 hours + (14 + x) miles / 4 mph

To find the value of x that minimizes the total time, we can take the derivative of the equation with respect to x, set it equal to zero, and solve for x.

However, given that we are asked to round the answer to the nearest whole number, we can simplify the problem by considering the value of x that yields the smallest whole number total time.

By trying different values of x, we can find the value that minimizes the total time.

When x = 0, the total time is 2.59 + 14 / 4 = 6.59 hours.

When x = 1, the total time is 2.59 + 15 / 4 = 6.84 hours.

When x = 2, the total time is 2.59 + 16 / 4 = 7.09 hours.

Continuing this process, we find that the smallest whole number total time occurs when x = 3.

Therefore, the lighthouse keeper should land approximately 3 miles from the point on the shore nearest to the lighthouse in order to make the fastest possible time to the restaurant.

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The confusion matrix in Figure 1 provides important information about the performance of a fraud detection classification algorithm. To help an end user assess the pros and cons of using this tool, we can focus on the false positives, false negatives, and accuracy.

The confusion matrix shows that out of the 33 cases identified as fraud (predicted Yes), 12 were actually fraud (true positives), while 21 were not (false positives). Additionally, out of the 20 non-fraud cases (predicted No), 8 were actually fraud (false negatives), and 12 were correctly classified as non-fraud (true negatives). The overall accuracy of the algorithm is 73.33%. The false positives indicate instances where the algorithm flagged transactions as fraudulent when they were not. This may lead to unnecessary investigations and potential inconvenience for innocent individuals. On the other hand, the false negatives represent cases where the algorithm failed to detect actual instances of fraud. This raises concerns about the tool's effectiveness in identifying fraudulent activities, potentially resulting in financial losses. The accuracy of 73.33% suggests that the algorithm correctly classified a significant portion of the cases. However, it is important to note that accuracy alone does not provide a comprehensive picture of the algorithm's performance. Considering the false positives and false negatives is crucial to understanding the tool's limitations and potential impact. Users should be aware of the possibility of both false alarms and missed fraud cases, and take additional measures to ensure comprehensive fraud detection and prevention.

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a18 − a12 = 24 == 24

d == 24

I hope this is correct and helps..

Answer:

x= 95 duhhhhhhh lol jk but its 95

Step-by-step explanation:

Answer:

x = 95° by the Vertical Angles are congruent theorem

Hope this helps!

Answer:

Keep you  mind straight.

Step-by-step explanation:

Answer:

There are 6 zeros in one million.

Step-by-step explanation:

1000000 (one million)

6 zeros

The true statement regarding the diagram is this: m∠WXY = m∠YXZ.

In the diagram, we find that angles WXY and angle YXZ are supplementary. The meaning of this is that the two angles add up to give 180 degrees. First, we have the angle that is at 90 degrees while the second angle is also at 90 degrees.

When we add these two together, we arrive at 180 degrees. So, the two angles are supplementary and equal thus, we can arrive at the conclusion that m∠WXY = m∠YXZ.

Complete Question:

The image is a straight line with points W, X, Z, and an angle with axis Y, appended at 45°.

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The dimension of the container of this size that has the minimum cost is \(x = \sqrt[3]{360}\), \(y = \sqrt[3]{360}\) and \(z =\frac{4}{3} \sqrt[3]{360}\)

The given parameters are:

Assume the dimensions of the container are: x, y and z.

The volume (V) would be:

\(V = xyz\)

Substitute 480 for V

\(xyz =480\)

And the objective cost function would be:

\(C =8xy + 6xz + 6yz\)

Differentiate the cost function using Lagrange multipliers

\(8x + 6z = \lambda xz\)

\(8y + 6z = \lambda yz\)

\(6x + 6y = \lambda xy\)

Divide equation (1) by (2)

\(\frac{8x + 6z}{8y + 6z} = \frac{\lambda xz}{\lambda yz}\)

\(\frac{8x + 6z}{8y + 6z} = \frac{x}{y}\)

Factor out 2

\(\frac{4x + 3z}{4y + 3z} = \frac{x}{y}\)

Cross multiply

\(4xy + 3yz = 4xy + 3xz\)

Evaluate the like terms

\(3yz = 3xz\)

Divide both sides by 3z

\(y = x\)

Divide the first equation by the third

\(\frac{8y + 6z}{6x + 6y} = \frac{\lambda yz}{\lambda xy}\)

\(\frac{8y + 6z}{6x + 6y} = \frac{z}{x}\)

Factor out 2

\(\frac{4y + 3z}{3x + 3y} = \frac{z}{x}\)

Cross multiply

\(4xy+3xz = 3xz + 3yz\)

Cancel out the common terms

\(4xy = 3yz\)

Divide both sides by y

\(4x = 3z\)

Make z the subject

\(z =\frac{4}{3}x\\\)

So, we have:

\(y = x\) and \(z =\frac{4}{3}x\\\)

Recall that:

\(xyz =480\)

Substitute \(y = x\) and \(z =\frac{4}{3}x\\\)

\(x \times x \times \frac 43x = 480\)

So, we have:

\(\frac 43x^3 = 480\)

Multiply both sides by 3/4

\(x^3 = 360\)

Take the cube roots of both sides

\(x = \sqrt[3]{360}\)

Recall that:

\(y = x\)

So, we have:

\(y = \sqrt[3]{360}\)

Also, we have:

\(z =\frac{4}{3}x\\\)

So, we have:

\(z =\frac{4}{3} \sqrt[3]{360}\)

Hence, the dimension of the container of this size that has the minimum cost is \(x = \sqrt[3]{360}\), \(y = \sqrt[3]{360}\) and \(z =\frac{4}{3} \sqrt[3]{360}\)

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Answer:

There are 4 terms

Step-by-step explanation:

“Terms are single numbers, variables, or the product of a number and variables. Examples of terms: 9 a 9a 9a. y y y.”

Answer:

For 7 houses you will need 5.83 acres of land and the builder will have 4.16 acres of land unused 

Step-by-step explanation:

The value of q is -27.

Recall Vieta's Formulas, which state that for a quadratic equation \(ax^2\) + bx + c = 0 with zeroes alpha and beta, the sum of the zeroes is equal to -b/a, and the product of the zeroes is equal to c/a.

In our equation \(x^2\) - 3x + q, the sum of the zeroes alpha and beta is -(-3)/1 = 3.

We are given that 2 alpha + 3 beta = 15. Substitute alpha = (15 - 3 beta)/2 into the equation.

Replace the value of alpha in the sum of zeroes equation: (15 - 3 beta)/2 + beta = 3.

Simplify the equation by multiplying both sides by 2: 15 - 3 beta + 2 beta = 6.

Combine like terms: 15 - beta = 6.

Subtract 15 from both sides: -beta = -9.

Multiply both sides by -1 to solve for beta: beta = 9.

Substitute the value of beta into the sum of zeroes equation: alpha = (15 - 3 * 9)/2 = -3.

Since we have the values of alpha and beta, we can find q using the product of the zeroes formula: q = alpha * beta = -3 * 9 = -27.

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(C) Regression analysis is the statistical method commonly used to estimate the level and trend in a time series by modeling the relationship between the data and independent variables.

Regression analysis is the statistical method used to estimate the level and trend in a time series. Time series data represents observations taken at different points in time and is commonly used to analyze trends and patterns over time.

Regression analysis allows us to model the relationship between a dependent variable (in this case, the time series data) and one or more independent variables (such as time or other relevant factors). By using regression analysis, we can identify the underlying trend in the time series and estimate its level.

The regression model captures the relationship between the dependent variable (the time series) and the independent variable(s) by fitting a line or curve that best represents the data. This line or curve helps to identify the overall trend and level of the time series.

While moving average, simulation method, covariance analysis, and correlation analysis are useful techniques in analyzing time series data, they are not specifically designed to estimate the level and trend in a time series. Therefore, (C) regression analysis is the most appropriate method for estimating the level and trend in a time series.

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Answer:

Answer for the question is A)

Answer:

A) 3:5 = 12:20

Step-by-step explanation:

The numbers should have the same proportion, so if you multiply the ratio with smaller numbers each by a specific number, it should equal the same ratio as the ratio with the bigger number (or even if you divide the ratio with bigger numbers to see if it equals the ratio with smaller numbers)

Example:

A) multiply 3:5 by 4:

3 x 4 = 12

5 x 4 = 20

Has the same proportion as 12:20, so that expresses a true proportion

B) multiply 14:6 by 2:

14 x 2 = 28

6 x 2 = 12

28:12 does not equal to 28:18, so not the same proportion.

C) multiply 6:2 by 7:

6 x 7 = 42

2 x 7 = 14

42:14 does not equal to 42:7, so not the same proportion.

Part a: The volume of such base would appear to be larger than it was if the bubble was already let go before the titration's equivalence point.

Part b: There would be no impact if the bubble had already been let go after the equivalent point.

For the stated condition-

An air bubble was present in the buret tip as the student started his part II titration. Unnoticed bubble release occurred at some point in the titration.

The inaccuracy in his titration findings that the bubble would've have made if:

Part a: If the bubble had burst before the titration's equivalence point, the base's volume would have appeared larger than it originally was, having the base seem stronger than it is, and changing calculations.

Part b: There would be no impact if the bubble had already been let go after the equivalent point.

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Answer:

I'm super sorry that i can't help but if i could get you to my brother and ask him for his number i bet he'll be able to help. ;) and if u r a girl he's pretty desperate for a girlfriend so ..... yeah

Step-by-step explanation:

hope this helps and also hope my brother can help byyyyyeeeee

Answer:

The answer should be 16

Step-by-step 48 divided by 3 or (length) divided by perimeter

(sorry if wrong i Haven't done this in 2 years)

The solution for the other variable, according to the stated statement, is\(X = 6^y\) and \(y = 21 * 2^X\)

Exponential numbers are represented by an, where an is multiplied by itself n times. An easy example is 8=2³=222. In exponential notation, an is known as the base, whereas n is known as the power, exponent, or index. Scientific notation is an example of an exponential number, with 10 usually typically serving as the base number.

Exponential functions are often employed in the biological sciences to describe the amount of a certain quantity over time, such as population size. Experiment data graphs are often created with time on the x-axis and amount on the y-axis.

a. y = log6(X)

\(6^y = X\)

\(X = 6^y\)

b. \(X = log2(y/21)\)

\(2^X = y/21\)

\(21 * 2^X = y\)

\(y = 21 * 2^X\)

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Answer:

Aonnalin, great name  :)  answer as below

Step-by-step explanation:

They tell us to use slope-intercept form.   This is something you will just have to remember  y = mx+b    

It is confusing b/c there is the other one, the point-slope formula too.  but just remember both and know that the point-slope one is to get to the slope-intercept one.    y-y1 = m(x-x1)  

m= slope

m = (y2-y1) / (x2-x1)

P1= (0,7)  in the form (x1,y1)

P2 =(8,-2) in the form (x2,y2)

m = -2-7 / 8-0

m = -9 / 8

now that we have the slope, just use either point with the point-slope

y-7 = (-9/8)(x-0)

y-7 = -9x/8

y = -9x/8 + 7

y = \(\frac{-9}{8}\) X + 7

slope-intercept form  :)