The transformation rule (x, y) → (-y, x) describes a 270* rotation about the origin for a triangle on the coordinate grid.
A transformation in mathematics is a process of mapping or changing one figure into another while preserving its shape, size and orientation. The coordinate grid is a tool used to plot points and study transformations in a two-dimensional plane.
The transformation rule that describes this rotation is (x, y) → (-y, x). This rule means that for every point (x, y) in the triangle STU, the new point (x', y') in the triangle S'T'U' is obtained by swapping the x and y coordinates and negating the y-coordinate. In other words, the x-coordinate remains unchanged, while the y-coordinate is negated.
For example, if the point (3, 4) is in the triangle STU, the new point (x', y') in the triangle S'T'U' would be (4, -3).
This rule applies to all points in the triangle, and the result is a rotation of the original triangle by 270* in a counterclockwise direction about the origin.
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Select all of the expressions that represent an `8\%` increase compared to `x`.
Answer:
1.08X
X+0.08X
(1+.08)X
Step-by-step explanation:
Which of the following equations results in infinitely many solutions?
9x80 = 8(x + 10)
9x + 10- 1x = 8(x + 10)
9x + 80 1x = 8(x + 10)
9x + 80 1x = 9(x + 10)
The equation with infinitely many solutions is:
9x + 80 - 1x = 8*(x + 10)
Which equation has infinitely many solutions?
An equation has infinitely many solutions when the dependence on x vanishes.
If you look at the third equation, we get:
9x + 80 - 1x = 8*(x + 10)
If we simplify the left side and expand the right side, we get:
8x + 80 = 8x + 80
So we have the exact same thing in both sides, this means that the equation is true for any value of x, so the equation has infinite solutions.
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i need some help with this problem i don’t really understand it
Answer:
-34x+29
Step-by-step explanation:
\(7(5-x)-3(9x+2)=7.5-7x-3.9x-3.2=35-7x-27x-6\\=-34x+29\)
Divide 3 1/2 divided by 1/2 in simplest form
Answer:
7
Step-by-step explanation:
For the problem:
3 1
2
÷
1
2
= ?
Convert any mixed numbers to fractions:
3 1
2
=
7
2
Division of fractions is equivalent to multiplication by the reciprocal of the second fraction:
7
2
÷
1
2
=
7
2
×
2
1
Once rearranged, multiply all of the numerators by each other. Do the same with the denominators and form a new fraction with these values:
7 × 2
2 × 1
=
14
2
The Greatest Common Factor (GCF) of 14 and 2 is 2. The result can be simplified by dividing both the numerator and denominator by 2.
14
2
=
14 ÷ 2
2 ÷ 2
= 7
The result is:
3 1
2
÷
1
2
= 7
Find the missing dimension. Help and hurry please!
Answer:
2.5
Step-by-step explanation:
37.5 divided by 15 which is 2.5 because you'd do the inverse. you know the method for area is base times height and in this case you know base and total area so you'd divide.
3.5z - 2.7z = -6
z = ?
Answer:
i believe it would be z = -7.5
Step-by-step explanation:
Answer:
-7.5
Step-by-step explanation:
Subtract 2.7z from 3.5z
0.8z= -6
divide each term by 0.8 - 0.8 divided by 0.8- -6 divided by 0.8
Cancel the common factor of 0.8
divide -6 by 0.8
Z= -7.5
Hello I need this ASAP please and thank you
There are 60 picture books in the library. The picture books make up 15% of all the books in the library. What is the total number of books in the library?
Answer:
400
Step-by-step explanation:
60 picture books are 15% of the total number of books.
Let the total number of books = x.
15% of x = 60
0.15x = 60
Divide both sides by 0.15
x = 60/0.15
x = 400
Answer: 400
Help please I’m confused
Answer:
The car is driving at 68 miles per hour.
Step-by-step explanation:
Notice how every hour the car drives another 68 miles? That's how you know the speed of the car.
Also MPH = Distance/Time = 340/5 = 68
Answer:
well if i did the math correctly it is 68 mph
Step-by-step explanation:
\(\frac{n}{7}\) - 12 = 5n + 5
I need to show my work, please.
Answer:
n= -3.5
Step-by-step explanation:
n/7 - 12 = 5n +5
+12 +12
n/7 = 5n+17
*7 *7
n = (5n+17)*7
n = 35n + 119
-35n -35n
-34n = 119
/-34 /-34
n = -3.5
The center of pressure on a boat's sail that occupies a region R in the plane is given by
xˉ = ∬R x ydA/∬R xydA
yˉ = ∬R x y^2dA/∬R xydA
Calculate the center of pressure on a triangular sail with vertices (0,0),(3,2) and (0,7).
Therefore, the center of pressure on the triangular sail is approximately (1.2, 0.9).
The center of pressure on a boat's sail that occupies a region R in the plane is given by
x = ∬R xydA/∬R ydA` and y = ∬R x²ydA/∬R xydA`.
To calculate the center of pressure on a triangular sail with vertices (0,0),(3,2) and (0,7) we will use the following formulas:
x = ∬R xydA/∬R ydA
y = ∬R x²ydA/∬R xydA
Remember that in this case, the region R in the plane is the triangular sail with vertices (0,0), (3,2), and (0,7).
Hence, the equations for x-bar and y-bar are:x-bar = ∬R xydA/∬R ydA= ∫(x=0 to x=3) ∫(y=0 to y=(7x/3))
= xy dy dx/ ∫(x=0 to x=3) ∫(y=0 to y=(7x/3)) y dy dx= 42/35= 1.2 units (approx)
And,y-bar = ∬R x²ydA/∬R xydA= ∫(x=0 to x=3) ∫(y=0 to y=(7x/3)) x²y dy dx/ ∫(x=0 to x=3) ∫(y=0 to y=(7x/3)) xy dy dx= 63/70= 0.9 units (approx)
Therefore, the center of pressure on the triangular sail is approximately (1.2, 0.9).
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Which algebraic expression would be used to denote a trisomic organism? a. 1n b. 3n c. 2n - 1 d. 2n + 1 e. 2n + 2.
The correct answer to the given question is d. 2n+1. The other options, such as 1n, 3n, 2n-1, and 2n+2, do not accurately represent the chromosome number of a trisomic organism.
A trisomic organism is one that has an extra copy of a chromosome in its genome. This means that it has three copies of a particular chromosome instead of the usual two, which can have significant implications for the organism's development and health.
In terms of algebraic notation, the chromosome number of a trisomic organism would be denoted as 2n+1, where "n" represents the normal diploid number of chromosomes for that organism. The "2n" represents the normal two sets of chromosomes, and the "+1" represents the extra chromosome.
Therefore, the correct answer to the given question is d. 2n+1. The other options, such as 1n, 3n, 2n-1, and 2n+2, do not accurately represent the chromosome number of a trisomic organism. It is important to note that trisomies can occur for any chromosome, not just the sex chromosomes, and can have varying effects depending on which chromosome is affected.
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8. Find the length of the unknown side. Round your
answer to the nearest tenth.
10 ft
A. 13.5 A
B. If
C. 4.4 ft
D. 19 ft
Answer:
the answer is C 4.4 ft hope it helps
Step-by-step explanation:
can someone tell me how to mark brainliest
Answer:
There is a crown next to the person that answered.
Step-by-step explanation:
Answer:
when two person will answer a question then the brainliest option will come and u can mark brainliest according to the person u wish
• The ratio of cookies to eggs was 9 to
1, which means that?
? cookies
could be made using 3 eggs.
The table shows the weekly income of 20 randomly selected full-time students. If the student did not work, a zero was entered (a) Check the data set for outliers (b) Draw a histogram of the data (c) Provide an explanation for any outliers
a) Any value outside of Q1 - 1.5(IQR) and Q3 + 1.5(IQR) can be considered a potential outlier.
b) This will give us a visual representation of the distribution of income among the full-time students.
c) It is important to analyze outliers carefully to ensure that they are not artificially skewing the results of our analysis.
(a) To check for outliers in the data set, we can use the box-and-whisker plot or the z-score method. However, since we do not have the exact data, we cannot use these methods. One way to identify potential outliers is to calculate the quartiles (Q1, Q2, and Q3) and the interquartile range (IQR).
(b) To draw a histogram of the data, we can use the frequency distribution table given in the question. The x-axis should represent the income ranges (e.g. $0-$100, $100-$200, etc.) and the y-axis should represent the frequency (i.e. the number of students who earned income within each range).
(c) If there are any outliers in the data set, we need to investigate them further to determine the reason for their unusual values. Possible reasons for outliers could be data entry errors, extreme values due to high- or low-income jobs, or unique situations such as unexpected windfalls or emergencies.
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Find the values of < and y.
(8x + 7)
5yº
(7y -- 34)
= (2x - 4)^
Answer:
x = 11
y = 17
Step-by-step explanation:
We know that opposite angles (or vertical angles) are equal.
So
8x + 7 = 9x - 4
Subtract 8x from both sides of the equation
8x - 8x + 7 = 9x - 8x - 4
7 = x - 4
Add 4 to both sides of the equation
7 + 4 = x - 4 + 4
11 = x
Looking at the other 2 angles,
5y = 7y - 34
Subtract 7 y from both sides of the equation
5y - 7y = 7y - 7y - 34
-2y = -34
Divide both sides by -2
-2y/-2 = -34/-2
y = 17
Answer:
Step-by-step explanation:
Vertically opposite angles are equal.
8x + 7 = 9x - 4 {Add 4 to both sides}
8x + 7 + 4 = 9x
8x + 11 = 9x {Subtract 8x from both sides}
11 = 9x - 8x
x = 11
7y - 34 = 5y {Add 34 to both sides}
7y = 5y + 34 {Subtract 5y form both sides}
7y - 5y = 34
2y = 34 {Divide both sides by 2
y = 34/2
y =17
1000-322divided by 72% of 21983
Im guessing the equation you saying is (1000-322) / (72% of 21983)
When answering each of them, the equation was simplified to:
678 / 15827.76 = 0.04283613094????
Im guessing this is the wrong equation so just comment the right one and ill change it-
What is the value of 12+ square root -63
Answer:
Impossible
Step-by-step explanation:
It's not possible doing the Square root of a negative number
John wants to construct a fence around his farm.
The farm is circular in shape with a diameter of 3 ft.
What is the length of fencing material he will need to fence one complete circle around his farm?
(Use 3.14 for the value of ∏ (pi))
HELP ASAP PLEASE
Answer:
9.42
Step-by-step explanation:
\(p = \pi \: r \\ \)
=3.14 × 3ft
=9.42 ft
I will give crown!!
Answer:
don't help they are doing a test.
Step-by-step explanation:
Solve (3x + 3) = 27
O A. x = -8 and x = 10
B. x = 8 and x = -10
C. X = 8 and x= -8
D. X= -8 and x = -10
Answer:
8 and -10
Step-by-step explanation:
B. x = 8 and x = -10
Simplify (2x^0/4x^-2y^4)^2. Write your answer using only positive exponents.
Simplifying this expression, we have:
\((\frac{2x^0}{4x^{-2}y^4})^2=(\frac{4x^0}{16x^{-4}y^8})=\frac{1}{4x^{-4}y^8}=\frac{x^4}{4y^8}^{}\)
[20 Points] Find f(t) for the following function using inverse Laplace Transform. Show your detailed solution: F(s) = 10(s²+1) s² (s + 2)
The inverse Laplace transform of F(s) = 10(s²+1) / [s² (s + 2)] is f(t) = 5t - 5sin(2t) + \(10e^(^-^2^t^).\)
To find the inverse Laplace transform of F(s), we first express F(s) in partial fraction form. The denominator s² (s + 2) can be factored as s² (s + 2) = s² (s + 2). Using partial fraction decomposition, we can express F(s) as:
F(s) = A/s + B/s² + C/(s + 2),
where A, B, and C are constants to be determined.
Next, we multiply both sides of the equation by the common denominator s² (s + 2) to eliminate the denominators. This gives us:
10(s²+1) = A(s + 2) + Bs(s + 2) + Cs².
Expanding and collecting like terms, we have:
10s² + 10 = As + 2A + Bs² + 2Bs + Cs².
Comparing coefficients of s², s, and the constant term on both sides of the equation, we can determine the values of A, B, and C. Solving the resulting system of equations, we find A = 5, B = -10, and C = 0.
Now, we have the expression for F(s) in terms of partial fractions as:
F(s) = 5/s - 10/s² - 10/(s + 2).
To find the inverse Laplace transform of F(s), we use the inverse Laplace transform table to obtain the corresponding time-domain functions for each term. The inverse Laplace transform of 5/s is 5, the inverse Laplace transform of -10/s² is -10t, and the inverse Laplace transform of -10/(s + 2) is \(10e^(^-^2^t^).\)
Finally, we add the inverse Laplace transforms of each term to obtain the solution f(t) = 5t - 5sin(2t) + \(10e^(^-^2^t^)\).
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What is the value of x in the solution to this system of equations?
4x−7y=105
y=−3x+10
Enter your answer in the box.
Answer:
Y=7y=105
Step-by-step explanation:
Answer:
x = 7
y= -11
Step-by-step explanation:
The age of professors at a certain university is normally distributed with an average of 45.0 years and a standard deviation of 6.0 years. If 16 professors are chosen at random for a committee, find the probability that the average age of those professors is greater than 42.0 years.
The probability is 0.9772. The average age of professors at a certain university is normally distributed with an average of 45.0 years and a standard deviation of 6.0 years.
If 16 professors are chosen at random for a committee, find the probability that the average age of those professors is greater than 42.0 years. We are required to find the probability that the average age of the 16 professors is greater than 42 years. Let us consider the mean of sample means as mu_x = 45 years. The standard error of the mean can be calculated as; standard error = standard deviation/sqrt(n)`where n = sample size.
Standard error = 6.0/sqrt(16) = 1.5. Therefore, z-score is calculated as; z-score = (sample mean - population mean)/standard error = (42-45)/1.5 = -2. Now, the probability of Z being less than -2 can be found from the z-table as P(Z < -2) = 0.0228. So, the probability that the average age of those professors is greater than 42 years is 1- P(Z < -2) = 1- 0.0228 = 0.9772.
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1 a survey firm wants to ask a random sample of adults in ohio if they support an increase in the state sales tax from 5% to 6%, with the additional revenue going to education. let p^ denote the proportion in the sample who say that they support the increase. suppose that 40% of all adults in ohio support the increase. how large a sample would be needed to guarantee that the standard deviation of p^ is no more than 0.01?
A sample of 2400 adults in Ohio would be needed to guarantee that the standard deviation of the proportion who support the increase in the state sales tax (p^) is no more than 0.01.
To determine the sample size needed to guarantee that the standard deviation of p^ is no more than 0.01, we need to use the formula:
n = (Zα/2)^2 * p(1-p) / (d^2)
where n is the sample size, Zα/2 is the critical value of the standard normal distribution for a confidence level of α/2, p is the proportion of adults in Ohio who support the increase (0.4 in this case), and d is the maximum margin of error (0.01 in this case).
Assuming a 95% confidence level (α = 0.05), the critical value of Zα/2 is 1.96. Substituting these values into the formula, we get:
n = (1.96)^2 * 0.4(1-0.4) / (0.01)^2
n = 1536.16
Therefore, we would need a sample size of at least 1537 adults in Ohio to guarantee that the standard deviation of p^ is no more than 0.01.
To calculate the required sample size for a given standard deviation of the sample proportion (p^), we can use the formula:
σ(p^) = √(pq/n)
where σ(p^) is the desired standard deviation, p is the proportion of support (0.40), q is the proportion of non-support (1-p, which is 0.60), and n is the sample size.
We want to guarantee that the standard deviation of p^ is no more than 0.01. Therefore, we set σ(p^) to be 0.01:
0.01 = √(0.40 * 0.60 / n)
Squaring both sides:
0.0001 = 0.24 / n
Now, solve for n:
n = 0.24 / 0.0001
n = 2400
So, a sample of 2400 adults in Ohio would be needed to guarantee that the standard deviation of the proportion who support the increase in the state sales tax (p^) is no more than 0.01.
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Which could be the measures of the three angles of an acute triangle?
As long as the measures of the three angles of a triangle add up to less than 180 degrees, and none of the angles measures more than 90 degrees, the triangle will be acute.
An acute triangle is a triangle that has three acute angles, which are angles that measure less than 90 degrees. All three angles of an acute triangle must be acute, so they must measure less than 90 degrees. The measures of the three angles of an acute triangle can be any combination of angles that add up to less than 180 degrees.
Here are some examples of the measures of the three angles of an acute triangle:
45 degrees, 45 degrees, 90 degrees
30 degrees, 60 degrees, 90 degrees
35 degrees, 40 degrees, 105 degrees
60 degrees, 60 degrees, 60 degrees (this would be an acute equilateral triangle)
As long as the measures of the three angles of a triangle add up to less than 180 degrees, and none of the angles measures more than 90 degrees, the triangle will be acute.
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What are the subtypes of quantitative data (techniques)?
There are two main subtypes of quantitative data, which are discrete data and continuous data. Each subtype has different techniques for analysis.
1. Discrete data: This type of data represents whole numbers or counts that can only take specific values. Examples include the number of students in a class or the number of cars in a parking lot. Techniques used to analyze discrete data include:
a. Frequency distribution: A summary of the number of times each value appears in the dataset.
b. Measures of central tendency: Calculating the mean, median, and mode of the dataset to understand its central point.
c. Measures of dispersion: Assessing the range, variance, and standard deviation to understand the spread of the data.
2. Continuous data: This type of data represents measurements that can take any value within a range, such as height, weight, or temperature. Techniques used to analyze continuous data include:
a. Histogram: A graphical representation of the distribution of the data, using bars to represent the frequency of values within specific intervals.
b. Probability density function: A mathematical function that describes the probability of a continuous random variable falling within a specific range.
c. Regression analysis: A statistical method for analyzing the relationship between a dependent variable and one or more independent variables.
Both discrete and continuous data can also be analyzed using inferential statistics, such as hypothesis testing and confidence intervals, to make inferences about a population based on a sample of the data.
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Can someone help me with this, please?
Answer:
P(pink) = 0.225
Step-by-step explanation:
We should ignore the spinner picture because it is a trick!
We need to use the data provided in the table
We need to find the probabilty of getting pink out of all the colors:
\(\frac{pink}{purple\ +\ pink\ +\ yellow\ +\ blue} = \frac{9}{12\ +\ 6\ +\ 9\ +\ 13}\\ = \frac{9}{40} = 0.225\ \ (22.5\%)\)
We use the probability notation:
P(pink) = 0.225
I NEED HELP ASAP!!!!!!!!