Answer:
Step-by-step explanation:
To solve the equation |5-4r| = 17, we need to consider two cases:Case 1: 5 - 4r is positiveIf 5 - 4r is positive, then we have:5 - 4r = 17Subtracting 5 from both sides, we get:-4r = 12Dividing both sides by -4, we get:r = -3So if 5 - 4r is positive, then the solution to the equation is r = -3.Case 2: 5 - 4r is negativeIf 5 - 4r is negative, then we have:-(5 - 4r) = 17Simplifying the left side by distributing the negative sign, we get:-5 + 4r = 17Adding 5 to both sides, we get:4r = 22Dividing both sides by 4, we get:r = 5.5So if 5 - 4r is negative, then the solution to the equation is r = 5.5.Therefore, the solution set of the equation |5-4r| = 17 is {-3, 5.5}.To show this solution set on a number line, we can draw a number line and mark the points -3 and 5.5 with open circles, since these values are not included in the solution set. Then, we shade the part of the number line between -3 and 5.5, since any value of r in this interval satisfies the equation. The resulting number line looks like this:
So the solution set of the equation is the interval (-3, 5.5).
Answer:
w
Step-by-step explanation:
Find the mean absolute deviation of the data below 11, 13, 10, 9, 7, 6, 9, 7
The mean absolute deviation of the data is equal to 1.75.
How to calculate the mean for the set of data?In Mathematics and Geometry, the mean for a data set can be calculated by using the following formula:
Mean = [F(x)]/n
For the total number of data, we have;
F(x) = 11 + 13 + 10 + 9 + 7 + 6 + 9 + 7
F(x) = 72.
Next, we would determine the mean as follows;
Mean = [F(x)]/n
Mean = 72/8
Mean = 9.
Generally speaking, MAD is an abbreviation for mean absolute deviation and it can be calculated by using this formula;
MAD = 1/n ∑|x - μ|
Where:
n represents the number of data (observed values)μ represents the mean of the data set.x represents the individual data (values).By substituting the given parameters into the MAD formula, we have the following;
MAD = 1/8 [(11 - 9) + (13 -9) +(10-9)+(9-9)+(7-9) +(6-9) + (9-9) + (7 -9)]
MAD = 1/8(2 + 4 +1+0+2+3+0+2).
MAD = 1/8(14)
MAD = 1.75
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The mean absolute deviation of the given data is 1.75
Calculating mean absolute deviation (MAD)From the question, we are to calculate the mean absolute deviation of the given data
To calculate the mean absolute deviation,
First, we will determine the mean of the data
Mean = (11 + 13 + 10 + 9 + 7 + 6 + 9 + 7) / 8
Mean = 72/8
Mean = 9
Now,
We will determine the absolute value of the difference between each data and the mean
|11 - 9| = 2
|13 - 9| = 4
|10 - 9| = 1
|9 - 9| = 0
|7 - 9| = 2
|6 - 9| = 3
|9 - 9| = 0
|7 - 9| = 2
Now,
We will determine the mean of these absolute differences:
Mean absolute deviation = (2 + 4 + 1 + 0 + 2 + 3 + 0 + 2) / 8
Mean absolute deviation = 14 / 8
Mean absolute deviation = 1.75
Hence,
The mean absolute deviation is 1.75
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how much of the variation in the outcome variable is explained by the least-squares regression line? round the answer to one decimal place. the percentage of variation in the outcome variable that is explained by the least-squares regression line is
To determine the percentage of variation in the outcome variable that is explained by the least-squares regression line, we need to calculate the coefficient of determination (R-squared). R-squared is the proportion of the variance in the dependent variable (outcome) that is explained by the independent variable(s) in the model.
To calculate R-squared, we can square the correlation coefficient between the dependent variable and the predicted values from the regression line. This will give us a value between 0 and 1, which represents the proportion of variation explained.
If we have already calculated the correlation coefficient (r), we can simply square it to obtain R-squared. Alternatively, we can use software or a calculator to obtain the value directly.
Once we have calculated R-squared, we can convert it to a percentage by multiplying by 100. For example, if R-squared is 0.75, then 75% of the variation in the outcome variable is explained by the least-squares regression line.
Therefore, to answer the question, we need to calculate R-squared based on the available data and round the answer to one decimal place. The resulting percentage will be the percentage of variation in the outcome variable that is explained by the least-squares regression line.
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A spinner is divided into 10 equal parts labeled 1 – 10. What is the probability the spinning the spinner two times and having it land on an even number on the first spin and a number greater than 4 on the second spin?
Answer: 3/10
Step-by-step explanation:
First find the probability of it landing on an even number:
There are 5 even numbers from 1-10
Therefor the probability is 5/10
Next find the probability that it spins a number greater than 4:
There are 6 numbers greater than 4 from 1-10
6/10
To find the probability of 1 and 2, multiply
5/10 * 6/10 = 3/10
how to send kred to a krew member
To send Kred to a Krew member, you can follow the steps provided by the Kred platform. These steps typically involve accessing your Kred account, selecting the desired recipient, specifying the amount of Kred to send, and confirming the transaction.
Sending Kred to a Krew member usually requires using the features and functionalities provided by the specific Kred platform or service. The process may vary depending on the platform, so it is recommended to refer to the official documentation or guidelines provided by the platform. Typically, you would need to log in to your Kred account, navigate to the appropriate section for sending Kred, select the intended recipient from the list of Krew members, enter the desired amount of Kred to send, review the transaction details, and confirm the transfer. The platform may also offer additional options or settings for customizing the transfer process.
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a teacher wants to create a graph of the students' scores on the final exam and see what the distribution looks like, looking for clusters and gaps in the scores. which type of graph is the most appropriate?
Answer:
A histogram would be the most appropriate graph to display the distribution of scores and identify clusters and gaps.
Step-by-step explanation:
Choose the INCORRECT statement below.
Answer:
N
Step-by-step explanation:
Convert 8 decimeter to milli meter
Answer:
8 decimeter are 800 millimeters
Step-by-step explanation:
Just multiply the length value by 100
Hope this helps :)
Pls brainliest...
Answer: 8 decimeters equals 800 millimeters.
Step-by-step explanation:
We know that,
1 decimeter = 100 millimeter
Therefore, To convert decimeters to millimeters, we have to multiply it by 100.
Hence, mm= dm*100
= 8*100
= 800
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PLEASE HELP ME SOLVE THESE PROBLEMS! SHOW WORK. THANK YOU!
The measure of arc:
16: m FE = 100 degree
17: mBC = 50 degree
18: mCE = 130 degree
19: mCFE = 230 degree
In the figure,
mFE = ∠FGE = 100 degree
mBC = ∠AGB = 50 degree
Now,
mCE = mCD +mDE
= 90 + (180 - mBC - mCD)
= 90 + ( 180 - 90 - 50)
= 130 degree
And mAF = 180 - mAB - mFE
= 180 - 50 - 100
= 30 degree
Now,
mCFE = 50+50+30+100
= 230 degree
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Will make brainiest if 2 people answer :3
Answer:
1.6
Step-by-step explanation:
12.8/8 = 1.6
15.2/9.5 = 1.6
Scale factor = 1.6
Which of the following is an example of a valid statement about the value of correlation coefficient r? O College major and GPA of UNCG students have a strong correlation id The correlation between the height and BMI of 10th graders is 0.82. We found a high correlation (r = 3.1) between weight and cholesterol levels in men over 40 years of age. The correlation between price and demand for a random sample of 150 products sold by a large company is 0.239 dollars.
The valid statement about the value of the correlation coefficient (r) is:
"The correlation between the height and BMI of 10th graders is 0.82."
The reason this statement is valid is that the correlation coefficient (r) measures the strength and direction of the linear relationship between two variables. It can range from -1 to +1, where -1 indicates a perfect negative correlation, +1 indicates a perfect positive correlation, and 0 indicates no correlation.
In the given statement, it is mentioned that the correlation coefficient between height and BMI of 10th graders is 0.82. This indicates a strong positive correlation between height and BMI, suggesting that as height increases, the BMI tends to increase as well.
The other statements provided do not represent valid examples because they either contain incorrect values for the correlation coefficient (e.g., r = 3.1) or provide correlation coefficients that are not correctly interpreted (e.g., stating a correlation coefficient in terms of dollars).
Therefore, the statement about the correlation between the height and BMI of 10th graders having a correlation coefficient of 0.82 is the valid statement.
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You plan to conduct a survey to find what proportion of the workforce has two or more jobs. you decide on the 98% confidence level and a margin of error of 3%. a pilot survey reveals that 7 of the 45 sampled hold two or more jobs. How many in the workforce should be interviewed to meet your requirements? (Round z-score to 3 decimal places. Round up your answer to the next whole number.)
To meet the requirements of a 98% confidence level and a margin of error of 3%, you should interview at least 314 individuals in the workforce.
To determine the sample size needed for the survey, we can use the formula:
n = (z^2 * p * (1-p)) / E^2
Where:
n is the required sample size
z is the z-score corresponding to the desired confidence level
p is the estimated proportion from the pilot survey
E is the desired margin of error
In this case, the desired confidence level is 98% which corresponds to a z-score of approximately 2.33 (rounded to 3 decimal places). The estimated proportion from the pilot survey is 7/45 = 0.1556, and the desired margin of error is 3% which is equivalent to 0.03.
Substituting these values into the formula:
n = (2.33^2 * 0.1556 * (1-0.1556)) / 0.03^2 ≈ 313.085
Rounding up to the next whole number, the required sample size is 314.
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Simplify (x+5)(x2−25)(x+5)2(x−5)2. What is the domain?
To simplify the expression (x+5)(x^2-25)(x+5)^2(x-5)^2, we can begin by factoring the expressions:
(x+5) = (x+5)
(x^2-25) = (x-5)(x+5)
(x+5)^2 = (x+5)(x+5)
(x-5)^2 = (x-5)(x-5)
Now, we can substitute these factorized expressions back into the original expression:
(x+5)(x^2-25)(x+5)^2(x-5)^2 = (x+5)(x-5)(x+5)(x-5)(x+5)(x+5)(x-5)(x-5)
Simplifying further, we can combine like terms:
(x+5)(x-5)(x+5)(x-5)(x+5)(x+5)(x-5)(x-5) = (x+5)^3(x-5)^3
Therefore, the simplified expression is (x+5)^3(x-5)^3.
As for the domain of this expression, it includes all real numbers because there are no restrictions or limitations on the values that x can take. Therefore, the domain is (-∞, ∞).
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how would the frenet formulas generalize to r4? r5? how many differential invariants are needed to specify a curve up to initial starting frame? what are the curves with constant differential invariants in that space? what possibilities can you find to help 3d beings visualize these curves?
The Frenet formulas describe the properties of curves in three-dimensional space (R^3). They provide a framework for understanding the curvature, torsion, and other geometric properties of curves.
However, when considering higher-dimensional spaces such as R^4 and R^5, the Frenet formulas can be generalized to accommodate these additional dimensions.
In R^4, we can extend the Frenet formulas to include two additional geometric quantities: the bitorsion and the pentascurvature. These additional quantities capture the behavior of curves in the extra dimensions beyond the usual curvature and torsion.
In R^5, further generalizations of the Frenet formulas can be made, incorporating additional geometric quantities that account for the curvature and torsion in the fifth dimension.
To specify a curve in R^n up to the initial starting frame, n differential invariants are needed. These differential invariants are geometric quantities that remain unchanged under transformations such as translation, rotation, and scaling. They provide a concise representation of the curve's intrinsic properties.
Curves with constant differential invariants in R^n are interesting because they exhibit specific geometric characteristics that remain invariant throughout the curve. These curves can be viewed as special cases where the geometric properties remain constant along the entire curve.
To help 3D beings visualize curves in higher-dimensional spaces such as R^4 and R^5, one approach is to use mathematical representations and computer visualization techniques. Three-dimensional projections of higher-dimensional curves can be displayed using various visualization tools, such as interactive 3D graphics or virtual reality environments. These techniques allow 3D beings to explore and perceive the complex structure of curves in higher-dimensional spaces,
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the number of books read by four students during each of the last 12 months is summarized in these boxplots. which student most likely read 9 or fewer books in the greatest number of months?
The distribution of the number of books read and identify the student who most likely read 9 or fewer books in the greatest number of months.
Based on the given information, it is not possible to determine which student most likely read 9 or fewer books in the greatest number of months without having the actual boxplots. Please provide the boxplots to give an accurate answer.
1. Boxplots are essential to analyze the data in this scenario.
2. The lower quartile (Q1), median (Q2), and upper quartile (Q3) in the boxplots can be used to determine the distribution of the number of books read.
3. Comparing the boxplots for each student can help determine the student who most likely read 9 or fewer books in the most months.
In order to answer the question accurately, please provide the boxplots for the four students. This will help in analyzing the distribution of the number of books read and identify the student who most likely read 9 or fewer books in the greatest number of months.
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A baby bird jumps from a tree branch and flutters to the ground. The function "f" models the bird's height (in meters) above the ground as a function of time (in seconds) after jumping. What is bird's height above the ground when it jumped.
The baby bird's initial height above the ground would be 10 meters when it jumped.
I understand you would like to know the height of the baby bird above the ground when it jumped, using the function "f" that models its height (in meters) as a function of time (in seconds).
To find the bird's initial height above the ground when it jumped, we need to evaluate the function f at the time when the bird just jumped, which is at time t = 0 seconds.
Step 1: Plug t = 0 into the function f(t).
f(0) = (height of the bird at time t = 0 seconds)
Since you didn't provide the specific function f, I cannot give you the exact height value. However, once you have the function f(t), simply substitute t = 0 and calculate f(0) to find the bird's initial height above the ground when it jumped.
For example, if the function were f(t) = 10 - 2t, you would do:
f(0) = 10 - 2(0) = 10
the baby bird's initial height above the ground would be 10 meters when it jumped. Make sure to use your given function f(t) to find the accurate height for your problem.
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The maximum height above the ground attained by the bird is 16 meters
How to find the bird's heightThe curve showing the travel path of the bird from a tree is a parabola.
Examining the graph attached in the problem, the maximum height reached with is same as the vertex of the parabola, is at point (2, 16)
hence we can say that the height reached by the bird is equal to 16 m
The attached graph shows the point marking the height the bird traveled
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the box is to be filled with sand. which measure would be used to find the amount of sand the box will hold?
To find the amount of sand that a box will hold, we would use the measure of volume.
Volume is the amount of space that an object or substance takes up in three dimensions, typically measured in cubic units. In the case of the box being filled with sand, we would use the volume of the box to determine how much sand it can hold. This can be calculated by multiplying the length, width, and height of the box together, which gives the total cubic units of volume. The resulting value would be in cubic units such as cubic inches, cubic feet, or cubic meters, depending on the units of measurement used.
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John wanted to estimate the average literacy rate for all countries. He randomly selected 35 countries and researched the literacy rate for the 35 countries. The statistical unit for John's study is:
A. the 35 countries
B. a literacy rate. C. a country O
D. an individual
The statistical unit for John's study is A. the 35 countries. John is trying to estimate the average literacy rate across all countries, and he randomly selected 35 countries to research their literacy rates. The statistical unit in this case is the individual country, as each country's literacy rate is being used to calculate the average.
The statistical unit for John's study is A. the 35 countries. This is because John's study is based on a sample of 35 countries that he randomly selected. The sample is used to estimate the average literacy rate for all countries. The sample size of 35 countries is large enough to provide a representative sample of the population of countries. If John had selected only a few countries or individuals, his estimate of the average literacy rate would not have been reliable. However, by selecting a sample of 35 countries, John can make a more accurate estimation of the average literacy rate for all countries. In conclusion, the statistical unit for John's study is the sample of 35 countries that he researched to estimate the average literacy rate for all countries.
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Please help me its due on wen but it needs to be turned in on tue night at 12
Answer:
C
Step-by-step explanation:
you just have to find the surface area here. 2(2x10) = 40 this is the area of both the sides. then 2(15×10) = 300 this is the area of the top and the bottom. after that we will find the area of the the back and the front side which is 2(15×2) = 60. finally we will add them up. 40+300+60= 400 in^2. remember the surface area is 2(lw + wh + hl) where I is the length w is the width and h is the height
Seven times the sum of a number 3 and equals 5 .
The number that satisfies the equation is -9/7.
What number satisfies the expression?An expression refers to the statement having minimum of two numbers, variables or both and an operator connecting them.
Let x be the number.
Then, we can write the word in expression of [tex]7(x+2) = 5[/tex]
We should expand the left side:
7(x + 2) = 5
7x + 14 = 5
7x = 5 - 14
7x = -9
x = -9/7.
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this to two (2) Change Significant figure. 40.505734
Answer:
Step-by-step explanation:
To change the number 40.505734 to two significant figures, we need to round it to the nearest value with two significant figures.
Looking at the third digit after the decimal point (5), we see that it is greater than or equal to 5. Therefore, we need to round up the second digit after the decimal point (0) by adding 1 to it.
Thus, the number 40.505734 rounded to two significant figures is 41.
The amount of time a certain brand of light bulb lasts is normally distributed with a mean of 2000 hours and a standard deviation of 65 hours. Using the empirical rule, what percentage of light bulbs last between 1805 hours and 2195 hours?
The percentage of light bulbs lasting between 1805 hours and 2195 hours is given as follows:
99.7%.
What does the Empirical Rule state?The Empirical Rule states that, for a normally distributed random variable, the symmetric distribution of scores is presented as follows:
The percentage of scores within one standard deviation of the mean of the distribution is of approximately 68%.The percentage of scores within two standard deviations of the mean of the distribution is of approximately 95%.The percentage of scores within three standard deviations of the mean off the distribution is of approximately 99.7%.For this problem, we have that both 1805 hours and 2195 hours are three standard deviations from the mean, hence the percentage is of 99.7%.
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PLEASE HELP I AM GROUNDED AND DONT UNDERSTAND
Answer:
114 degrees
Step-by-step explanation:
x + 66 = 180
x = 180-66
x=114 degrees
PLEASE HELP ON TIME LIMIT !!!!Solve the system of equations. Be sure to check your work. Complete the ordered pair to show your answer
Y=2/3x+5
y = 1/2x-2
Answer:( , )
Answer:(3,9)
Step-by-step explanation:
a researcher is performing an analysis on a 2x2x4 research design. how many independent variables are there in the design?
In the given research design, there are three independent variables. The notation "2x2x4" represents the number of levels or conditions for each independent variable.
The first independent variable has two levels (2x), the second independent variable has two levels (2x), and the third independent variable has four levels (4). Each independent variable is manipulated or varied independently of the others in order to examine their effects on the dependent variable(s). Therefore, there are three independent variables in this 2x2x4 research design.
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if 60! is written out as an integer, with how many consecutive 0’s will that integer end?
Answer:
14
Step-by-step explanation:
Ok, 60! is a really big number
[tex]x!=x(x-1)(x-2)...1[/tex]
So we have 60*59*58...*1
2 times 5 is 10 which makes a terminal zero (ending zero)
We need to count how many fives and twos are in 60!
There are 60/5=12 5^1's
There are 60/25=2 5^2's
So 12+2=14
There are way more 2's than fives so we take the lesser number
So the answer is 14
*Note that 60/25 is not 2, we need an integer rounded down
9.4c-1.01*(22b-5.2c)+b
I think you wana simplify so here you go:
1) Expand by distributing terms.
9.4x−(22.22y−5.252x)+y
2) Remove parentheses.
9.4x−22.22y+5.252x+y
3) Collect like terms.
(9.4x+5.252x)+(−22.22y+y)
4) Simplify.
14.652x−21.22y
At this point you can't simplify it any further as there are no like terms
Hope this helps!
Glenda checks, her computer monitors made at her company for defects. It has been shown that 0.5% of the monitors are defective. She decides to check several monitors and record if they are defective which of the following will make this process into a binomial experiment.
As long as Glenda's process follows these criteria, it will be a binomial experiment.
Glenda's process of checking computer monitors for defects to be considered a binomial experiment, it must meet the following criteria:
1. Fixed number of trials (n): Glenda must check a fixed number of monitors, such as 50 or 100.
2. Only two possible outcomes: Each monitor can either be defective (success) or not defective (failure).
3. Independent trials: The outcome of one trial (checking one monitor) does not affect the outcome of any other trials.
4. Constant probability of success (p): The probability of finding a defective monitor should remain constant at 0.5% (0.005) for all trials.
As long as Glenda's process follows these criteria, it will be a binomial experiment.
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How do I solve this?
Answer:
All Real Numbers
Step-by-step explanation:
I will be using x instead of θ as a variable:
1.) [tex]1+tan^2[/tex]x is equal to [tex]sec^2[/tex]x, so we can substitute [tex]sec^2[/tex]x for [tex]1+ tan^2[/tex]x.
2.) Now, since [tex]csc^2[/tex]x is equal to [tex]\frac{1}{sin^2x}[/tex], and [tex]sec^2[/tex]x is equal to [tex]\frac{1}{cos^2x}[/tex], we can just move [tex]cos^2x[/tex] to the numerator and [tex]sin^2x[/tex] to the denominator. [tex]\frac{cos^2x}{sin^2x}[/tex] is equal to [tex]cot^2x[/tex]
3.) Since we have [tex]cot^2x[/tex] = [tex]cot^2x[/tex] , the answer is All Real Numbers.
Complete the table to show the coordinates of the vertices of A’B’C’
The coordinates of the vertices of A’B’C’ are A' = (1, 3), B' = (3, 4) and C' = (4, 1)
From the question, we have the following parameters that can be used in our computation:
The graph
The coordinates of the vertices of A’B’C’ are the coordinates of the locations of the the vertices A', B' and C'
Using the above as a guide, we have the following:
From the graph, we have the coordinates of the vertices of A’B’C’ to be
A' = (1, 3)
B' = (3, 4)
C' = (4, 1)
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Find the volume of the right cone below in terms of π.
Answer:
units
16
6
Submit Answer
SIZED
The volume of the given cone is 192 π units³.
Given is a cone of height 16 units and radius of 6 units, we need to find the volume of the cone,
V(cone) = π × radius² × height / 3
= π × 6² × 16 / 3
= π × 12 × 16
= 192π
Hence the volume of the given cone is 192 π units³.
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